commit bb4d189b37b196dcd8bb0b5cb551e1cd7084596f
Author: Sam Stephenson <sam@37signals.com>
Date:   Thu Jan 18 22:24:27 2007 +0000

    prototype: Reorganize the source tree.

diff --git a/CHANGELOG b/CHANGELOG
new file mode 100644
index 0000000..0b30f2e
--- /dev/null
+++ b/CHANGELOG
@@ -0,0 +1,365 @@
+*SVN*
+
+* Add test to ensure Content-type header is set for simulated verbs.  [sam]
+
+* Fix Content-Type header for HTTP methods simulated with POST not defaulting to application/x-www-form-urlencoded.  [Thomas Fuchs]
+
+* Simplify form serialization and add support for fields with the same name as Hash methods.  Closes #6649.  [Mislav Marohnić]
+
+* Fix attribute selectors for IE.  Closes #5170.  [Tobie Langel, Andrew Dupont]
+
+* A slew of dom.js improvements.  Closes #4217, #6589, #7001.  [Tobie]
+  - Fix Element.getDimensions() for hidden elements, make Element.getHeight() use .getDimensions()
+  - Add Element.getWidth()
+  - Make Element.replace() call .toString() on the html argument (alike .update())
+  - Fix an issue with Element.get/setStyle() and Safari with 'float'
+  - Add a bunch of missing unit tests 
+
+* Fix an issue with Element.setStyle({opacity:''}) setting the opacity to 0 instead of removing the set inline opacity style.  [Thomas Fuchs]
+
+* Ensure Ajax.Request's evalResponse is called before onComplete so that onComplete can reference any elements created during the response.  Closes #6727.  [jonathan]
+
+* Ensure the WEBrick test runner sets the correct Content-Type for tests and fixtures. [sam]
+
+* Form.serialize once again works with non-form elements.  This is a temporary change to prevent the Rails link_to_remote regression described in #6898.  Prototype 1.5.1 will introduce an API for working with collections of arbitrary form elements.  References #6887.  Closes #6898.  [sam]
+
+* Make selectors match forms that have an element with name="id" correctly, fixes #5759 [mislav]
+
+* Remove support for HTTP authorization in Ajax calls introduced with #6366.  Closes #6638 [jmecham]
+
+* Add Enumerable.size() to count elements in an enumerable and the corresponding Array.size() method, fixes #6710 [ZenCocoon]
+
+* Add String.succ() method to allow for String ranges, fixes #6037 [Cory Hudson, mislav]
+  Examples:
+    'abcd'.succ();                                   -> 'abce'
+    $R('a','d').map(function(char){ return char; }); -> ['a','b','c','d']
+
+* Make Element.scrollTo() correctly consider offsets of parent DOM nodes, fixes #6625 [ohader, savetheclocktower]
+
+* Fix Enumerable.inGroupsOf() to correctly work with fill values that evaluate to false, fixes #6782 [hawk]
+
+* Remove/cleanup redundant $() calls in dom.js, fixes #6817 [Tobie]
+
+* Don't cache files in automatic unit tests, fixes #6218 [voidlock]
+
+* Add $w() to easily create arrays from strings like Ruby's %w, fixes #5682 [glazedginger, brendon.aaron]
+
+* Add Element.toggleClassName() to toggle CSS classes on elements, fixes #6759 [Tobie]
+
+* Make Form.getInputs always return an array for consistency, fixes #6475 [Justin Gehtland, savetheclocktower]
+
+* Make TimedObserver work correctly for SELECT MULTIPLE elements, fixes #6593 [clemos, tdd]
+
+* Fix Template.prototype.evaluate to correctly interpret 0 and false values, add String.interpret() for safely interpreting and converting values to strings, fixes #6675 [hawk]
+
+* Make Element.getStyle() work with camelCased argument, fixes #6686 [Tobie]
+
+* Fix a redundant check in Array.prototype.compact, fixes #4739 [wlodarcz, mislav]
+
+* Fix $() to correctly pass back the results of document.getElementById(), notably returning "null" on elements not found, fixes #6582 [adsmart]
+
+* Change/add assertNull, assertUndefined, assertNullOrUndefined and not-* variants in unittest.js, fixes #6582 [adsmart]
+
+* Cleanup String.prototype.camelize, fix an issue with String.prototype.underscore, fixes #4714, #6685 [Tobie, Thomas Fuchs]
+
+* Add String.prototype.capitalize, which returns a string with the first character in upper case, fixes #6666 [Tobie]
+
+* Make Element.getStyle() and Element.setStyle() handle the CSS 'opacity' property transparently in IE, fixes #6093 [brandon.aaron, Tobie]
+
+* Fix handling of CSS 'float' property for Element.getStyle() and Element.setStyle(), fixes #4160 [Thomas Fuchs, ericf]
+
+* Fix that onComplete would be called twice with synchronous Ajax requests on Safari (provides units tests for #5756) [Thomas Fuchs]
+
+* Fix Form.Field.activate to not select text on buttons in IE, fixes #2653 [sutch, mislav, Thomas Fuchs]
+
+* Fix String.unescapeHTML() on Firefox for strings that are longer than 2048 bytes, fixes #5789 [Paul Moers, Thomas Fuchs]
+
+* Redefine Array.prototype.concat for Opera, as the native implemenation doesn't work correctly [Thomas Fuchs]
+
+* Add unit tests for Function.prototype.bind() [Thomas Fuchs]
+
+* Add String.prototype.underscore and String.prototype.dasherize [Thomas Fuchs]
+  Examples:
+    'Hello_World'.dasherize()                    -> 'Hello-World'
+    'borderBottomWidth'.underscore()             -> 'border_bottom_width'
+    'borderBottomWidth'.underscore().dasherize() -> 'border-bottom-width'
+
+*1.5.0_rc2* (November 11, 2006)
+
+* Ensure that existing DOM properties take precedence over extended element methods in all browsers.  Closes #5115.  [Sean Kleinjung, sam]
+
+* Add Element.Methods.readAttribute as a simple wrapper around getAttribute (which isn't a "real" function and doesn't have .apply or .call in Safari and IE).  Useful in conjunction with Enumerable.invoke for extracting the values of a custom attribute from a collection of elements.  [sam]
+  Example:
+    <div id="widgets">
+      <div class="widget" widget_id="7">...</div>
+      <div class="widget" widget_id="8">...</div>
+      <div class="widget" widget_id="9">...</div>
+    </div>
+    
+    $$('div.widget').invoke('readAttribute', 'widget_id')
+    // ["7", "8", "9"]
+
+* Add Element.Methods.immediateDescendants, like $A($(element).childNodes) but without text nodes.  [sam]
+
+* More consistency.  Closes #6573.  [Bob Silva]
+
+* String.prototype.toQueryParams and Hash.prototype.toQueryString now properly serialize arrays as multiple values.  Closes #4436.  [mislav, altblue, L`OcuS]
+
+* Fix Form.serialize for options with empty values.  Closes #5033. [tdd, Thomas Fuchs, sam]
+
+* Add Element.Methods.Simulated for simulating HTMLElement methods in lesser browsers.  Add hasAttribute as the first simulated method.  [tdd, Thomas Fuchs, sam]
+
+* Add a "retry with throw" button for test error messages. [sam]
+
+* rake test now runs test/unit/*.html by default.  Additionally, you can specify individual tests to run with the TESTS environment variable, and you can restrict the tests to particular browsers using the BROWSERS environment variable. [sam]
+
+  Examples:
+    % BROWSERS=safari,firefox rake test
+    % TESTS=dom rake test
+
+* Element.hasClassName now bypasses the Element.ClassNames API for performance.  [sam]
+
+* Pick some low-hanging performance and DRYness fruit.  [sam]
+  - Inline length property accesses in for loops
+  - Enumerable-ize for loops where it makes sense
+  - Make better use of Element.Methods and Form.Methods/Form.Element.Methods
+
+* A slew of Ajax improvements.  Closes #6366.  [mislav, sam]
+  
+  Public-facing changes include:
+  - HTTP method can be specified in either lowercase or uppercase, and uppercase is always used when opening the XHR connection
+  - Added 'encoding' option (for POST) with a default of 'UTF-8'
+  - Ajax.Request now recognizes all the JavaScript MIME types we're aware of
+  - PUT body support with the 'postBody' option
+  - HTTP authentication support with the 'username' and 'password' options
+  - Query parameters can be passed as a string or as a hash
+  - Fixed both String.toQueryParams and Hash.toQueryString when handling empty values
+  - Request headers can now be specified as a hash with the 'requestHeaders' option
+
+* Improve performance of the common case where $ is called with a single argument. Closes #6347. [sam, rvermillion, mislav]
+
+* Fix Object.inspect to correctly distinguish between null and undefined, fixes #5941 [tdd, mislav]
+
+* Don't serialize disabled form elements, fixes #4586 [tdd]
+
+* Make HTML element classes extension mechanism for Safari not throw errors on WebKit beta versions [Thomas Fuchs]
+
+* Add support for using Element.update() with no or a non-string parameter [Thomas Fuchs]
+
+  Example:
+    $('empty_me').update()          -> clears the element
+    $('easy_as').update(123)        -> set element content to '123'
+
+* Add unit tests for hashes, fixes #6344 [Tobie Langel]
+
+* Add clone() method to arrays, fixes #6338 [Tobie Langel]
+
+* Backing out of [5194] (Element.clear) because of issues with IE on certain elements, #6051
+
+* Add Element.clear for easily emptying out elements, fixes #6051 [brandon.aaron@gmail.com]
+
+* Enumerable.each now returns the enumerable to allow for method chaining, fixes #6250 [eventualbuddha]
+
+* Make makeClipping and undoClipping always return their element to stay chainable
+
+* Fix an issue with certain Element chain calls not correctly extending elements with Prototype element methods on IE [Thomas Fuchs]
+
+* Add Enumerable.eachSlice and Enumerable.inGroupsOf, fixes #6046 [rails@tddsworld.com, Thomas Fuchs]
+
+  Example:
+    [1,2,3,4,5].inGroupsOf(3)       -> [[1,2,3],[4,5,null]]
+    [1,2,3].inGroupsOf(4,'x')       -> [[1,2,3,'x']]
+
+* Complete unit tests for array.js and string.js [Thomas Fuchs]
+
+* Performance improvements for document.getElementsByClassName, including querying with XPath in supported browsers. [Andrew Dupont]
+
+* Make Form.getElements() return elements in the correct order, fix broken Form.serialize return, fixes #4249, #6172 [lars@pinds.com, Thomas Fuchs, john]
+
+* Add various DOM unit tests, fixes #6176, #6177 [tdd]
+
+* Split Form.serialize into Form.serialize and Form.serializeElements. The latter can be used stand-alone to serialize an array of elements you pass in, instead of the entire form [DHH]
+
+* Form.Element.disable() and .enable() will now work correctly, fixes #6034 [dresselm@businesslogic.com]
+
+* Fix IE and Safari issues with Position.positionedOffset, add position.html unit tests, fixes #5621 [renggli@iam.unibe.ch]
+
+* Fix an issue with Element.undoClipping and IE [Thomas Fuchs]
+
+* Element.cleanWhitespace now correctly removes consecutive empty text nodes, fixes #3209 [livier.duroselle@gmail.com]
+
+* Element.extend now does not try to extend text nodes, fixes #4642 [siegfried.puchbauer@gmail.com]
+
+*1.5.0_rc1* (September 4, 2006)
+
+* bindAsEventListener now passes along any provided arguments after the event argument.  Closes #5508.  [todd.fisher@revolution.com]
+
+* Fix makeClipping and undoClipping with local overflow style values other than visible and hidden, fixes #3672  [Thomas Fuchs]
+
+* Add Element.up, Element.down, Element.previous, and Element.next for easily traversing the DOM.  (Inspired by Thomas Fuchs' original implementation of Element.up: http://pastie.caboo.se/7702) [sam]
+
+  Examples:
+    <div id="sidebar">                  -> $('nav').up() or $('menu').up('div') 
+      <ul id="nav">                     -> $('sidebar').down()  or $('sidebar').down('ul') or $('menu').previous()
+        <li>...</li>                    -> $('sidebar').down(1) or $('sidebar').down('li')
+        <li>...</li>                    -> $('sidebar').down(2) or $('sidebar').down('li', 2) or $('sidebar').down('li').next('li')
+        <li class="selected">...</li>   -> $('sidebar').down('li.selected')
+      </ul>                             
+      <ul id="menu">                    -> $('sidebar').down('ul').next()
+        ...
+
+* Refactor $$ and Element.getElementsBySelector into Selector.findChildElements. [sam]
+
+* Add Element.match, which takes a single CSS selector expression and returns true if it matches the element. [sam]
+
+* Add Element.ancestors, Element.descendants, Element.previousSiblings, Element.nextSiblings, and Element.siblings. [sam]
+
+* Add Element.inspect for better DOM debugging. [sam]
+
+* Add an optional boolean argument to String.prototype.inspect which, when true, makes the string double-quoted instead of single-quoted. [sam]
+
+* Add the uniq() method to Arrays, which returns a new Array with duplicates removed, fixes #3810 [secondlife]
+
+* Add stop() method to PeriodicalExecutor, fixes #4801 [Jon Evans]
+
+* Fix issues with Enumerable.any, ObjectRange.toArray, added unit tests, fixes #4419 [miyamuko, Thomas Fuchs]
+
+* Fix two instances of unneccesarily redeclared variables, fixes #5229 [Thomas Fuchs]
+
+* Fix a loop in Element.extend to properly use local variable, fixes #5128 [arrix]
+
+* Add constants for additional keys in Event, fixes #5411, #5795 [simone_b]
+
+* Workaround a DOM API bug in Opera in Position.page(), fixes #2407, #5848 [Thomas Fuchs]
+
+* Remove duplicate definition of Position.clone(), fixes #3765 [Thomas Fuchs]
+
+* Make destructive Element, Form, and Form.Element methods return their first argument, so that multiple calls can be chained together. [sam]
+
+  ex. $("sidebar").addClassName("selected").show();
+
+  The following methods now return their first argument: Element.toggle, Element.hide, Element.show, Element.remove, Element.update, Element.replace, Element.addClassName, Element.removeClassName, Element.observe, Element.stopObserving, Element.cleanWhitespace, Element.scrollTo, Element.setStyle, Element.makePositioned, Element.undoPositioned, Element.makeClipping, Element.undoClipping, Form.reset, Form.disable, Form.enable, Form.focusFirstElement, Form.Element.focus, Form.Element.select, Form.Element.clear, Form.Element.activate, Form.Element.disable, Form.Element.enable.
+
+* For consistency, Element.toggle, Element.show, Element.hide, Field.clear, and Field.present no longer take an arbitrary number of arguments. [sam]
+  
+  !! BACKWARDS COMPATIBILITY CHANGE !!
+  
+  If you have code that looks like this:
+    Element.show('page', 'sidebar', 'content');
+  You need to replace it with code like this:
+    ['page', 'sidebar', 'content'].each(Element.show);
+
+* Mix in Form and Form.Element methods to forms and form field elements with $() and $$(). Closes #4448. [Dan Webb, sam]
+
+* Add Object.clone [sam]
+
+* Add Form.Element.disable and Form.Element.enable. Closes #4943. [jan@prima.de]
+
+* Field is now simply an alias for Form.Element. [sam]
+
+* Add Element.Methods.getElementsByClassName and Element.Methods.getElementsBySelector. Closes #4669. [Andrew Dupont, DHH, sam]
+
+* Avoid race condition when stopping an Ajax.PeriodicalUpdater. Closes #4809. [e98cuenc@gmail.com]
+
+* Improve support for synchronous requests. Closes #5916. [sam, jthrom@gmail.com]
+
+* Add serialization and observation support for input type=search. Closes #4096. [rpnielsen@gmail.com]
+
+* Properly decode query components in String.prototype.toQueryParams. Closes #3487. [sam]
+
+* Add Array.prototype.reduce [sam]:
+  [1, 2].reduce()   // [1, 2]
+  [1].reduce()      // 1
+  [].reduce()       // undefined
+
+* Add Object.keys and Object.values [sam]
+
+* Simulate non-GET/POST requests by POSTing with a _method parameter set to the actual verb [DHH]
+
+* Make Element.update() handle TABLE-related elements with the DOM API because of IE's missing .innerHTML property on them [Thomas Fuchs, thx to Rick Olson]
+
+* Sync to script.aculo.us unittest.js library as of 2006/08/29 [Thomas Fuchs]
+
+* Add additional unit tests to test/unit/dom.html for testing Element.update and $().update in various enviroments [Thomas Fuchs]
+
+* Prevent possible exceptions on unloading the page in IE [Thomas Fuchs]
+
+*1.5.0_rc0* (April 5, 2006)
+
+* Modify HTMLElement.prototype and short-circuit Element.extend where possible. Closes #4477. [Thomas Fuchs]
+
+* Only observe window.onunload in IE for Mozilla bfcache support. Closes #3726. [Mike A. Owens]
+
+* Don't redefine Array.prototype.shift. Closes #4138. [leeo]
+
+* Prevent redefining Array.prototype.reverse more than once. Closes #3951. [brettdgibson@gmail.com]
+
+* Fix Enumerable.min/Enumerable.max to recognize the value 0. Closes #3847, #4190. [rubyonrails@brainsick.com, Martin Bialasinski]
+
+* Change Ajax.getTransport to prefer XMLHttpRequest in anticipation of IE 7. Closes #3688. [jschrab@malicstower.org, sam]
+
+* Make Array.prototype.flatten more robust. Closes #3453. [Martin Bialasinski, sam]
+
+* Fix evalScripts from crashing Firefox if script includes 'var'. Closes #3288, #4165. [rahul@ntag.com, sam]
+
+* Scope iterators locally. Closes #4589. [sam]
+
+* Support Insertion.Before/Insertion.After for <tr> elements in IE. Closes #3925. [rails-venkatp@sneakemail.com]
+
+* Add a contentType option for overriding application/x-www-form-urlencoded in Ajax.Request. Closes #3564. [avif@arc90.com, sam]
+
+* Surround values in the X-JSON header in parenthesis for better compatibility with Firefox. Closes #4118. [bigsmoke@gmail.com]
+
+* Fix Form.serialize to properly encode option values in multiple selects in IE. Closes #3291. [rubyonrails@brainsick.com]
+
+* Cache methods added to DOM elements with Element.extend to prevent memory leaks in IE. Closes #4465. [jaen@laborint.com, sam]
+
+* 1.5.0_pre1* (March 26, 2006)
+
+* Add attribute selector support for Selector (and $$). Closes #4368. [devslashnull@gmail.com]
+  Example:
+    $$('form#foo input[type=text]').each(function(input) {
+      input.setStyle({color: 'red'});
+    });
+  
+* Send Accept header containing 'text/javascript, text/html, application/xml, text/xml */*'' to inform Rails that we prefer RJS, but we'll take HTML or XML or whatever if you can't deliver the goods [DHH]
+
+* Make $$ work in IE. Closes #3715. [rubyonrails@brainsick.com]
+
+* Add test/browser.html, which provides a simple object browser for the Prototype source (Firefox/Safari only). [sam]
+
+* Add Element.extend, which mixes Element methods into a single HTML element.  This means you can now write $('foo').show() instead of Element.show('foo').  $, $$ and document.getElementsByClassName automatically call Element.extend on any returned elements. [sam]
+
+* Add Element.replace as a cross-browser implementation of the "outerHTML" property. References #3246. [tom@craz8.com]
+
+* Fix Enumerable.zip iterator behavior. [Marcin Kaszynski, sam]
+
+*1.5.0_pre0* (January 18, 2006)
+
+* Add String.prototype.truncate to complement the Action View truncate helper. [sam]
+
+* Add String.prototype.gsub, String.prototype.sub, and String.prototype.scan, all of which take a pattern and an iterator (or a pattern and a replacement template string in the case of gsub and sub). [sam]
+
+* Add a Template class for interpolating named keys from an object in a string. [sam]
+
+* Add the $$ function for finding DOM elements by simple CSS selector strings. [sam]
+  Example: Find all <img> elements inside <p> elements with class "summary", all inside
+           the <div> with id "page". Hide each matched <img> tag.
+             $$('div#page p.summary img').each(Element.hide)
+     
+* Add a Selector class for matching elements by single CSS selector tokens. [sam]
+
+* Add Test.Unit.Assertions.assertEnumEqual for comparing Enumerables in tests. [sam]
+
+* Add Element.childOf(element, ancestor) which returns true when element is a child of ancestor. [sam]
+
+* Fix escaping in String.prototype.inspect. [sam]
+
+* Add String.prototype.strip to remove leading and trailing whitespace from a string. [sam]
+
+* Move Prototype to Rails SVN. [sam]
+  http://dev.rubyonrails.org/svn/rails/spinoffs/prototype/
+  
+* Make the console nicer. [sam]
+
+* Prune the source tree. [sam]
diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,16 @@
+Copyright (c) 2005 Sam Stephenson
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README b/README
new file mode 100644
index 0000000..65bf740
--- /dev/null
+++ b/README
@@ -0,0 +1,55 @@
+= Prototype
+==== An object-oriented JavaScript framework
+
+Prototype is a JavaScript framework that aims to ease development of dynamic 
+web applications.  It offers a familiar class-style OO framework, extensive
+Ajax support, higher-order programming constructs, and easy DOM manipulation.
+
+=== Targeted platforms
+
+Prototype currently targets the following platforms:
+
+* Microsoft Internet Explorer for Windows, version 6.0 and higher
+* Mozilla Firefox 1.0/Mozilla 1.7 and higher
+* Apple Safari 1.2 and higher
+
+== Using Prototype
+
+To use Prototype in your application, download the latest release from the 
+Prototype web site (http://prototype.conio.net/) and copy 
+<tt>dist/prototype.js</tt> to a suitable location. Then include it in your HTML
+like so:
+
+  <script type="text/javascript" src="/path/to/prototype.js"></script>
+
+=== Building Prototype from source
+
+<tt>prototype.js</tt> is a composite file generated from many source files in 
+the <tt>src/</tt> directory. To build Prototype, you'll need:
+
+* a copy of the Prototype source tree, either from a distribution tarball or
+  from the Subversion repository (see below)
+* Ruby 1.8.2 or higher (http://www.ruby-lang.org/)
+* Rake -- Ruby Make (http://rake.rubyforge.org/)
+* RDoc, if your Ruby distribution does not include it
+
+From the root Prototype directory,
+
+* <tt>rake dist</tt> will preprocess the Prototype source using ERB and 
+  generate the composite <tt>dist/prototype.js</tt>.
+* <tt>rake package</tt> will create a distribution tarball in the 
+  <tt>pkg/</tt> directory.
+
+== Contributing to Prototype
+
+Check out the Prototype source with 
+  $ svn co http://dev.rubyonrails.org/svn/rails/spinoffs/prototype/
+
+Modify the files in <tt>src/</tt>, add tests in <tt>test/</tt> if possible, 
+and post a patch to http://dev.rubyonrails.org/newticket (please make sure 
+to pick "Prototype" as the component).
+
+== Documentation
+
+Please see the Prototype documentation on the script.aculo.us wiki:
+  http://wiki.script.aculo.us/scriptaculous/show/Prototype
diff --git a/Rakefile b/Rakefile
new file mode 100644
index 0000000..173c0c7
--- /dev/null
+++ b/Rakefile
@@ -0,0 +1,59 @@
+require 'rake'
+require 'rake/packagetask'
+
+PROTOTYPE_ROOT     = File.expand_path(File.dirname(__FILE__))
+PROTOTYPE_SRC_DIR  = File.join(PROTOTYPE_ROOT, 'src')
+PROTOTYPE_DIST_DIR = File.join(PROTOTYPE_ROOT, 'dist')
+PROTOTYPE_PKG_DIR  = File.join(PROTOTYPE_ROOT, 'pkg')
+PROTOTYPE_VERSION  = '1.5.0'
+
+task :default => [:dist, :package, :clean_package_source]
+
+task :dist do
+  $:.unshift File.join(PROTOTYPE_ROOT, 'lib')
+  require 'protodoc'
+  
+  Dir.chdir(PROTOTYPE_SRC_DIR) do
+    File.open(File.join(PROTOTYPE_DIST_DIR, 'prototype.js'), 'w+') do |dist|
+      dist << Protodoc::Preprocessor.new('prototype.js')
+    end
+  end
+end
+
+Rake::PackageTask.new('prototype', PROTOTYPE_VERSION) do |package|
+  package.need_tar_gz = true
+  package.package_dir = PROTOTYPE_PKG_DIR
+  package.package_files.include(
+    '[A-Z]*',
+    'dist/prototype.js',
+    'lib/**',
+    'src/**',
+    'test/**'
+  )
+end
+
+task :test => [:dist, :test_units]
+
+require 'test/lib/jstest'
+desc "Runs all the JavaScript unit tests and collects the results"
+JavaScriptTestTask.new(:test_units) do |t|
+  tests_to_run     = ENV['TESTS']    && ENV['TESTS'].split(',')
+  browsers_to_test = ENV['BROWSERS'] && ENV['BROWSERS'].split(',')
+
+  t.mount("/dist")
+  t.mount("/test")
+  
+  Dir["test/unit/*.html"].each do |test_file|
+    test_file = "/#{test_file}"
+    test_name = test_file[/.*\/(.+?)\.html/, 1]
+    t.run(test_file) unless tests_to_run && !tests_to_run.include?(test_name)
+  end
+  
+  %w( safari firefox ie konqueror ).each do |browser|
+    t.browser(browser.to_sym) unless browsers_to_test && !browsers_to_test.include?(browser)
+  end
+end
+
+task :clean_package_source do
+  rm_rf File.join(PROTOTYPE_PKG_DIR, "prototype-#{PROTOTYPE_VERSION}")
+end
diff --git a/lib/protodoc.rb b/lib/protodoc.rb
new file mode 100644
index 0000000..31311b0
--- /dev/null
+++ b/lib/protodoc.rb
@@ -0,0 +1,36 @@
+require 'erb'
+
+class String
+  def lines
+    split $/
+  end
+  
+  def strip_whitespace_at_line_ends
+    lines.map {|line| line.gsub(/\s+$/, '')} * $/
+  end
+end
+
+module Protodoc
+  module Environment
+    def include(*filenames)
+      filenames.map {|filename| Preprocessor.new(filename).to_s}.join("\n")
+    end
+  end
+  
+  class Preprocessor
+    include Environment
+    
+    def initialize(filename)
+      @filename = File.expand_path(filename)
+      @template = ERB.new(IO.read(@filename), nil, '%')
+    end
+    
+    def to_s
+      @template.result(binding).strip_whitespace_at_line_ends
+    end
+  end  
+end
+
+if __FILE__ == $0
+  print Protodoc::Preprocessor.new(ARGV.first)
+end
diff --git a/src/HEADER b/src/HEADER
new file mode 100644
index 0000000..389922b
--- /dev/null
+++ b/src/HEADER
@@ -0,0 +1,7 @@
+/*  Prototype JavaScript framework, version <%= PROTOTYPE_VERSION %>
+ *  (c) 2005-2007 Sam Stephenson
+ *
+ *  Prototype is freely distributable under the terms of an MIT-style license.
+ *  For details, see the Prototype web site: http://prototype.conio.net/
+ *
+/*--------------------------------------------------------------------------*/
\ No newline at end of file
diff --git a/src/ajax.js b/src/ajax.js
new file mode 100644
index 0000000..0ee1632
--- /dev/null
+++ b/src/ajax.js
@@ -0,0 +1,313 @@
+var Ajax = {
+  getTransport: function() {
+    return Try.these(
+      function() {return new XMLHttpRequest()},
+      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
+      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
+    ) || false;
+  },
+  
+  activeRequestCount: 0
+}
+
+Ajax.Responders = {
+  responders: [],
+  
+  _each: function(iterator) {
+    this.responders._each(iterator);
+  },
+
+  register: function(responder) {
+    if (!this.include(responder))
+      this.responders.push(responder);
+  },
+  
+  unregister: function(responder) {
+    this.responders = this.responders.without(responder);
+  },
+  
+  dispatch: function(callback, request, transport, json) {
+    this.each(function(responder) {
+      if (typeof responder[callback] == 'function') {
+        try {
+          responder[callback].apply(responder, [request, transport, json]);
+        } catch (e) {}
+      }
+    });
+  }
+};
+
+Object.extend(Ajax.Responders, Enumerable);
+
+Ajax.Responders.register({
+  onCreate: function() {
+    Ajax.activeRequestCount++;
+  }, 
+  onComplete: function() {
+    Ajax.activeRequestCount--;
+  }
+});
+
+Ajax.Base = function() {};
+Ajax.Base.prototype = {
+  setOptions: function(options) {
+    this.options = {
+      method:       'post',
+      asynchronous: true,
+      contentType:  'application/x-www-form-urlencoded',
+      encoding:     'UTF-8',
+      parameters:   ''
+    }
+    Object.extend(this.options, options || {});
+    
+    this.options.method = this.options.method.toLowerCase();
+    if (typeof this.options.parameters == 'string') 
+      this.options.parameters = this.options.parameters.toQueryParams();
+  }
+}
+
+Ajax.Request = Class.create();
+Ajax.Request.Events = 
+  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
+
+Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
+  _complete: false,
+  
+  initialize: function(url, options) {
+    this.transport = Ajax.getTransport();
+    this.setOptions(options);
+    this.request(url);
+  },
+
+  request: function(url) {
+    this.url = url;
+    this.method = this.options.method;
+    var params = this.options.parameters;
+
+    if (!['get', 'post'].include(this.method)) {
+      // simulate other verbs over post
+      params['_method'] = this.method;
+      this.method = 'post';
+    }
+    
+    params = Hash.toQueryString(params);
+    if (params && /Konqueror|Safari|KHTML/.test(navigator.userAgent)) params += '&_='
+    
+    // when GET, append parameters to URL
+    if (this.method == 'get' && params)
+      this.url += (this.url.indexOf('?') > -1 ? '&' : '?') + params;
+      
+    try {
+      Ajax.Responders.dispatch('onCreate', this, this.transport);
+    
+      this.transport.open(this.method.toUpperCase(), this.url, 
+        this.options.asynchronous);
+
+      if (this.options.asynchronous)
+        setTimeout(function() { this.respondToReadyState(1) }.bind(this), 10);
+      
+      this.transport.onreadystatechange = this.onStateChange.bind(this);
+      this.setRequestHeaders();
+
+      var body = this.method == 'post' ? (this.options.postBody || params) : null;
+      
+      this.transport.send(body);
+
+      /* Force Firefox to handle ready state 4 for synchronous requests */
+      if (!this.options.asynchronous && this.transport.overrideMimeType)
+        this.onStateChange();
+        
+    }
+    catch (e) {
+      this.dispatchException(e);
+    }
+  },
+
+  onStateChange: function() {
+    var readyState = this.transport.readyState;
+    if (readyState > 1 && !((readyState == 4) && this._complete))
+      this.respondToReadyState(this.transport.readyState);
+  },
+  
+  setRequestHeaders: function() {
+    var headers = {
+      'X-Requested-With': 'XMLHttpRequest',
+      'X-Prototype-Version': Prototype.Version,
+      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
+    };
+
+    if (this.method == 'post') {
+      headers['Content-type'] = this.options.contentType +
+        (this.options.encoding ? '; charset=' + this.options.encoding : '');
+      
+      /* Force "Connection: close" for older Mozilla browsers to work
+       * around a bug where XMLHttpRequest sends an incorrect
+       * Content-length header. See Mozilla Bugzilla #246651. 
+       */
+      if (this.transport.overrideMimeType &&
+          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
+            headers['Connection'] = 'close';
+    }
+    
+    // user-defined headers
+    if (typeof this.options.requestHeaders == 'object') {
+      var extras = this.options.requestHeaders;
+
+      if (typeof extras.push == 'function')
+        for (var i = 0, length = extras.length; i < length; i += 2) 
+          headers[extras[i]] = extras[i+1];
+      else
+        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
+    }
+
+    for (var name in headers) 
+      this.transport.setRequestHeader(name, headers[name]);
+  },
+  
+  success: function() {
+    return !this.transport.status
+        || (this.transport.status >= 200 && this.transport.status < 300);
+  },
+
+  respondToReadyState: function(readyState) {
+    var state = Ajax.Request.Events[readyState];
+    var transport = this.transport, json = this.evalJSON();
+
+    if (state == 'Complete') {
+      try {
+        this._complete = true;
+        (this.options['on' + this.transport.status]
+         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
+         || Prototype.emptyFunction)(transport, json);
+      } catch (e) {
+        this.dispatchException(e);
+      }
+      
+      if ((this.getHeader('Content-type') || 'text/javascript').strip().
+        match(/^(text|application)\/(x-)?(java|ecma)script(;.*)?$/i))
+          this.evalResponse();
+    }
+
+    try {
+      (this.options['on' + state] || Prototype.emptyFunction)(transport, json);
+      Ajax.Responders.dispatch('on' + state, this, transport, json);
+    } catch (e) {
+      this.dispatchException(e);
+    }
+    
+    if (state == 'Complete') {
+      // avoid memory leak in MSIE: clean up
+      this.transport.onreadystatechange = Prototype.emptyFunction;
+    }
+  },
+  
+  getHeader: function(name) {
+    try {
+      return this.transport.getResponseHeader(name);
+    } catch (e) { return null }
+  },
+  
+  evalJSON: function() {
+    try {
+      var json = this.getHeader('X-JSON');
+      return json ? eval('(' + json + ')') : null;
+    } catch (e) { return null }
+  },
+  
+  evalResponse: function() {
+    try {
+      return eval(this.transport.responseText);
+    } catch (e) {
+      this.dispatchException(e);
+    }
+  },
+
+  dispatchException: function(exception) {
+    (this.options.onException || Prototype.emptyFunction)(this, exception);
+    Ajax.Responders.dispatch('onException', this, exception);
+  }
+});
+
+Ajax.Updater = Class.create();
+
+Object.extend(Object.extend(Ajax.Updater.prototype, Ajax.Request.prototype), {
+  initialize: function(container, url, options) {
+    this.container = {
+      success: (container.success || container),
+      failure: (container.failure || (container.success ? null : container))
+    }
+    
+    this.transport = Ajax.getTransport();
+    this.setOptions(options);
+
+    var onComplete = this.options.onComplete || Prototype.emptyFunction;
+    this.options.onComplete = (function(transport, param) {
+      this.updateContent();
+      onComplete(transport, param);
+    }).bind(this);
+
+    this.request(url);
+  },
+
+  updateContent: function() {
+    var receiver = this.container[this.success() ? 'success' : 'failure'];
+    var response = this.transport.responseText;
+    
+    if (!this.options.evalScripts) response = response.stripScripts();
+    
+    if (receiver = $(receiver)) {
+      if (this.options.insertion)
+        new this.options.insertion(receiver, response);
+      else
+        receiver.update(response);
+    }
+    
+    if (this.success()) {
+      if (this.onComplete)
+        setTimeout(this.onComplete.bind(this), 10);
+    }
+  }
+});
+
+Ajax.PeriodicalUpdater = Class.create();
+Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {
+  initialize: function(container, url, options) {
+    this.setOptions(options);
+    this.onComplete = this.options.onComplete;
+
+    this.frequency = (this.options.frequency || 2);
+    this.decay = (this.options.decay || 1);
+    
+    this.updater = {};
+    this.container = container;
+    this.url = url;
+
+    this.start();
+  },
+
+  start: function() {
+    this.options.onComplete = this.updateComplete.bind(this);
+    this.onTimerEvent();
+  },
+
+  stop: function() {
+    this.updater.options.onComplete = undefined;
+    clearTimeout(this.timer);
+    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
+  },
+
+  updateComplete: function(request) {
+    if (this.options.decay) {
+      this.decay = (request.responseText == this.lastText ? 
+        this.decay * this.options.decay : 1);
+
+      this.lastText = request.responseText;
+    }
+    this.timer = setTimeout(this.onTimerEvent.bind(this), 
+      this.decay * this.frequency * 1000);
+  },
+
+  onTimerEvent: function() {
+    this.updater = new Ajax.Updater(this.container, this.url, this.options);
+  }
+});
diff --git a/src/array.js b/src/array.js
new file mode 100644
index 0000000..a594f97
--- /dev/null
+++ b/src/array.js
@@ -0,0 +1,111 @@
+var $A = Array.from = function(iterable) {
+  if (!iterable) return [];
+  if (iterable.toArray) {
+    return iterable.toArray();
+  } else {
+    var results = [];
+    for (var i = 0, length = iterable.length; i < length; i++)
+      results.push(iterable[i]);
+    return results;
+  }
+}
+
+Object.extend(Array.prototype, Enumerable);
+
+if (!Array.prototype._reverse)
+  Array.prototype._reverse = Array.prototype.reverse;
+
+Object.extend(Array.prototype, {
+  _each: function(iterator) {
+    for (var i = 0, length = this.length; i < length; i++)
+      iterator(this[i]);
+  },
+  
+  clear: function() {
+    this.length = 0;
+    return this;
+  },
+  
+  first: function() {
+    return this[0];
+  },
+  
+  last: function() {
+    return this[this.length - 1];
+  },
+  
+  compact: function() {
+    return this.select(function(value) {
+      return value != null;
+    });
+  },
+  
+  flatten: function() {
+    return this.inject([], function(array, value) {
+      return array.concat(value && value.constructor == Array ?
+        value.flatten() : [value]);
+    });
+  },
+  
+  without: function() {
+    var values = $A(arguments);
+    return this.select(function(value) {
+      return !values.include(value);
+    });
+  },
+  
+  indexOf: function(object) {
+    for (var i = 0, length = this.length; i < length; i++)
+      if (this[i] == object) return i;
+    return -1;
+  },
+  
+  reverse: function(inline) {
+    return (inline !== false ? this : this.toArray())._reverse();
+  },
+  
+  reduce: function() {
+    return this.length > 1 ? this : this[0];
+  },
+  
+  uniq: function() {
+    return this.inject([], function(array, value) {
+      return array.include(value) ? array : array.concat([value]);
+    });
+  },
+  
+  clone: function() {
+    return [].concat(this);
+  },
+  
+  size: function() {
+    return this.length;
+  },
+  
+  inspect: function() {
+    return '[' + this.map(Object.inspect).join(', ') + ']';
+  }
+});
+
+Array.prototype.toArray = Array.prototype.clone;
+
+function $w(string){
+  string = string.strip();
+  return string ? string.split(/\s+/) : [];
+}
+
+if(window.opera){
+  Array.prototype.concat = function(){
+    var array = [];
+    for(var i = 0, length = this.length; i < length; i++) array.push(this[i]);
+    for(var i = 0, length = arguments.length; i < length; i++) {
+      if(arguments[i].constructor == Array) {
+        for(var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++) 
+          array.push(arguments[i][j]);
+      } else { 
+        array.push(arguments[i]);
+      }
+    }
+    return array;
+  }
+}
diff --git a/src/base.js b/src/base.js
new file mode 100644
index 0000000..cf2f438
--- /dev/null
+++ b/src/base.js
@@ -0,0 +1,128 @@
+var Class = {
+  create: function() {
+    return function() { 
+      this.initialize.apply(this, arguments);
+    }
+  }
+}
+
+var Abstract = new Object();
+
+Object.extend = function(destination, source) {
+  for (var property in source) {
+    destination[property] = source[property];
+  }
+  return destination;
+}
+
+Object.extend(Object, {
+  inspect: function(object) {
+    try {
+      if (object === undefined) return 'undefined';
+      if (object === null) return 'null';
+      return object.inspect ? object.inspect() : object.toString();
+    } catch (e) {
+      if (e instanceof RangeError) return '...';
+      throw e;
+    }
+  },
+  
+  keys: function(object) {
+    var keys = [];
+    for (var property in object)
+      keys.push(property);
+    return keys;
+  },
+  
+  values: function(object) {
+    var values = [];
+    for (var property in object)
+      values.push(object[property]);
+    return values;
+  },
+  
+  clone: function(object) {
+    return Object.extend({}, object);
+  }
+});
+
+Function.prototype.bind = function() {
+  var __method = this, args = $A(arguments), object = args.shift();
+  return function() {
+    return __method.apply(object, args.concat($A(arguments)));
+  }
+}
+
+Function.prototype.bindAsEventListener = function(object) {
+  var __method = this, args = $A(arguments), object = args.shift();
+  return function(event) {
+    return __method.apply(object, [( event || window.event)].concat(args).concat($A(arguments)));
+  }
+}
+
+Object.extend(Number.prototype, {
+  toColorPart: function() {
+    var digits = this.toString(16);
+    if (this < 16) return '0' + digits;
+    return digits;
+  },
+
+  succ: function() {
+    return this + 1;
+  },
+  
+  times: function(iterator) {
+    $R(0, this, true).each(iterator);
+    return this;
+  }
+});
+
+var Try = {
+  these: function() {
+    var returnValue;
+
+    for (var i = 0, length = arguments.length; i < length; i++) {
+      var lambda = arguments[i];
+      try {
+        returnValue = lambda();
+        break;
+      } catch (e) {}
+    }
+
+    return returnValue;
+  }
+}
+
+/*--------------------------------------------------------------------------*/
+
+var PeriodicalExecuter = Class.create();
+PeriodicalExecuter.prototype = {
+  initialize: function(callback, frequency) {
+    this.callback = callback;
+    this.frequency = frequency;
+    this.currentlyExecuting = false;
+
+    this.registerCallback();
+  },
+
+  registerCallback: function() {
+    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
+  },
+  
+  stop: function() {
+    if (!this.timer) return;
+    clearInterval(this.timer);
+    this.timer = null;
+  },
+
+  onTimerEvent: function() {
+    if (!this.currentlyExecuting) {
+      try {
+        this.currentlyExecuting = true;
+        this.callback(this);
+      } finally {
+        this.currentlyExecuting = false;
+      }
+    }
+  }
+}
diff --git a/src/dom.js b/src/dom.js
new file mode 100644
index 0000000..c55a2df
--- /dev/null
+++ b/src/dom.js
@@ -0,0 +1,678 @@
+function $(element) {
+  if (arguments.length > 1) {
+    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
+      elements.push($(arguments[i]));
+    return elements;
+  }
+  if (typeof element == 'string')
+    element = document.getElementById(element);
+  return Element.extend(element);
+}
+
+if (Prototype.BrowserFeatures.XPath) {
+  document._getElementsByXPath = function(expression, parentElement) {
+    var results = [];
+    var query = document.evaluate(expression, $(parentElement) || document,
+      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
+    for (var i = 0, length = query.snapshotLength; i < length; i++)
+      results.push(query.snapshotItem(i));
+    return results;
+  };
+}
+
+document.getElementsByClassName = function(className, parentElement) {
+  if (Prototype.BrowserFeatures.XPath) {
+    var q = ".//*[contains(concat(' ', @class, ' '), ' " + className + " ')]";
+    return document._getElementsByXPath(q, parentElement);
+  } else {
+    var children = ($(parentElement) || document.body).getElementsByTagName('*');
+    var elements = [], child;
+    for (var i = 0, length = children.length; i < length; i++) {
+      child = children[i];
+      if (Element.hasClassName(child, className))
+        elements.push(Element.extend(child));
+    }
+    return elements;
+  }
+};
+
+/*--------------------------------------------------------------------------*/
+
+if (!window.Element)
+  var Element = new Object();
+
+Element.extend = function(element) {
+  if (!element || _nativeExtensions || element.nodeType == 3) return element;
+  
+  if (!element._extended && element.tagName && element != window) {
+    var methods = Object.clone(Element.Methods), cache = Element.extend.cache;
+    
+    if (element.tagName == 'FORM')
+      Object.extend(methods, Form.Methods);
+    if (['INPUT', 'TEXTAREA', 'SELECT'].include(element.tagName)) 
+      Object.extend(methods, Form.Element.Methods);
+    
+    Object.extend(methods, Element.Methods.Simulated);
+      
+    for (var property in methods) {
+      var value = methods[property];
+      if (typeof value == 'function' && !(property in element))
+        element[property] = cache.findOrStore(value);
+    }
+  }
+  
+  element._extended = true;
+  return element;
+};
+
+Element.extend.cache = {
+  findOrStore: function(value) {
+    return this[value] = this[value] || function() {
+      return value.apply(null, [this].concat($A(arguments)));
+    }
+  }
+};
+
+Element.Methods = {
+  visible: function(element) {
+    return $(element).style.display != 'none';
+  },
+  
+  toggle: function(element) {
+    element = $(element);
+    Element[Element.visible(element) ? 'hide' : 'show'](element);
+    return element;
+  },
+
+  hide: function(element) {
+    $(element).style.display = 'none';
+    return element;
+  },
+  
+  show: function(element) {
+    $(element).style.display = '';
+    return element;
+  },
+
+  remove: function(element) {
+    element = $(element);
+    element.parentNode.removeChild(element);
+    return element;
+  },
+
+  update: function(element, html) {
+    html = typeof html == 'undefined' ? '' : html.toString();
+    $(element).innerHTML = html.stripScripts();
+    setTimeout(function() {html.evalScripts()}, 10);
+    return element;
+  },
+  
+  replace: function(element, html) {
+    element = $(element);
+    html = typeof html == 'undefined' ? '' : html.toString();
+    if (element.outerHTML) {
+      element.outerHTML = html.stripScripts();
+    } else {
+      var range = element.ownerDocument.createRange();
+      range.selectNodeContents(element);
+      element.parentNode.replaceChild(
+        range.createContextualFragment(html.stripScripts()), element);
+    }
+    setTimeout(function() {html.evalScripts()}, 10);
+    return element;
+  },
+  
+  inspect: function(element) {
+    element = $(element);
+    var result = '<' + element.tagName.toLowerCase();
+    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
+      var property = pair.first(), attribute = pair.last();
+      var value = (element[property] || '').toString();
+      if (value) result += ' ' + attribute + '=' + value.inspect(true);
+    });
+    return result + '>';
+  },
+  
+  recursivelyCollect: function(element, property) {
+    element = $(element);
+    var elements = [];
+    while (element = element[property])
+      if (element.nodeType == 1)
+        elements.push(Element.extend(element));
+    return elements;
+  },
+  
+  ancestors: function(element) {
+    return $(element).recursivelyCollect('parentNode');
+  },
+  
+  descendants: function(element) {
+    return $A($(element).getElementsByTagName('*'));
+  },
+  
+  immediateDescendants: function(element) {
+    if (!(element = $(element).firstChild)) return [];
+    while (element && element.nodeType != 1) element = element.nextSibling;
+    if (element) return [element].concat($(element).nextSiblings());
+    return [];
+  },
+
+  previousSiblings: function(element) {
+    return $(element).recursivelyCollect('previousSibling');
+  },
+  
+  nextSiblings: function(element) {
+    return $(element).recursivelyCollect('nextSibling');
+  },
+  
+  siblings: function(element) {
+    element = $(element);
+    return element.previousSiblings().reverse().concat(element.nextSiblings());
+  },
+  
+  match: function(element, selector) {
+    if (typeof selector == 'string')
+      selector = new Selector(selector);
+    return selector.match($(element));
+  },
+  
+  up: function(element, expression, index) {
+    return Selector.findElement($(element).ancestors(), expression, index);
+  },
+  
+  down: function(element, expression, index) {
+    return Selector.findElement($(element).descendants(), expression, index);
+  },
+
+  previous: function(element, expression, index) {
+    return Selector.findElement($(element).previousSiblings(), expression, index);
+  },
+  
+  next: function(element, expression, index) {
+    return Selector.findElement($(element).nextSiblings(), expression, index);
+  },
+  
+  getElementsBySelector: function() {
+    var args = $A(arguments), element = $(args.shift());
+    return Selector.findChildElements(element, args);
+  },
+  
+  getElementsByClassName: function(element, className) {
+    return document.getElementsByClassName(className, element);
+  },
+  
+  readAttribute: function(element, name) {
+    element = $(element);
+    if (document.all && !window.opera) {
+      var t = Element._attributeTranslations;
+      if (t.values[name]) return t.values[name](element, name);
+      if (t.names[name])  name = t.names[name];
+      var attribute = element.attributes[name];
+      if(attribute) return attribute.nodeValue;
+    }    
+    return element.getAttribute(name);
+  },
+  
+  getHeight: function(element) {
+    return $(element).getDimensions().height; 
+  },
+  
+  getWidth: function(element) {
+    return $(element).getDimensions().width; 
+  },
+  
+  classNames: function(element) {
+    return new Element.ClassNames(element);
+  },
+
+  hasClassName: function(element, className) {
+    if (!(element = $(element))) return;
+    var elementClassName = element.className;
+    if (elementClassName.length == 0) return false;
+    if (elementClassName == className || 
+        elementClassName.match(new RegExp("(^|\\s)" + className + "(\\s|$)")))
+      return true;
+    return false;
+  },
+
+  addClassName: function(element, className) {
+    if (!(element = $(element))) return;
+    Element.classNames(element).add(className);
+    return element;
+  },
+
+  removeClassName: function(element, className) {
+    if (!(element = $(element))) return;
+    Element.classNames(element).remove(className);
+    return element;
+  },
+  
+  toggleClassName: function(element, className) {
+    if (!(element = $(element))) return;
+    Element.classNames(element)[element.hasClassName(className) ? 'remove' : 'add'](className);
+    return element;
+  },
+  
+  observe: function() {
+    Event.observe.apply(Event, arguments);
+    return $A(arguments).first();
+  },
+  
+  stopObserving: function() {
+    Event.stopObserving.apply(Event, arguments);
+    return $A(arguments).first();
+  },
+  
+  // removes whitespace-only text node children
+  cleanWhitespace: function(element) {
+    element = $(element);
+    var node = element.firstChild;
+    while (node) {
+      var nextNode = node.nextSibling;
+      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
+        element.removeChild(node);
+      node = nextNode;
+    }
+    return element;
+  },
+  
+  empty: function(element) {
+    return $(element).innerHTML.match(/^\s*$/);
+  },
+  
+  descendantOf: function(element, ancestor) {
+    element = $(element), ancestor = $(ancestor);
+    while (element = element.parentNode)
+      if (element == ancestor) return true;
+    return false;
+  },
+  
+  scrollTo: function(element) {
+    element = $(element);
+    var pos = Position.cumulativeOffset(element);
+    window.scrollTo(pos[0], pos[1]);
+    return element;
+  },
+  
+  getStyle: function(element, style) {
+    element = $(element);
+    if (['float','cssFloat'].include(style))
+      style = (typeof element.style.styleFloat != 'undefined' ? 'styleFloat' : 'cssFloat');
+    style = style.camelize();
+    var value = element.style[style];
+    if (!value) {
+      if (document.defaultView && document.defaultView.getComputedStyle) {
+        var css = document.defaultView.getComputedStyle(element, null);
+        value = css ? css[style] : null;
+      } else if (element.currentStyle) {
+        value = element.currentStyle[style];
+      }
+    }
+    
+    if((value == 'auto') && ['width','height'].include(style) && (element.getStyle('display') != 'none'))
+      value = element['offset'+style.capitalize()] + 'px';
+    
+    if (window.opera && ['left', 'top', 'right', 'bottom'].include(style))
+      if (Element.getStyle(element, 'position') == 'static') value = 'auto';
+    if(style == 'opacity') {
+      if(value) return parseFloat(value);
+      if(value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))  
+        if(value[1]) return parseFloat(value[1]) / 100;  
+      return 1.0; 
+    }
+    return value == 'auto' ? null : value;
+  },
+  
+  setStyle: function(element, style) {
+    element = $(element);
+    for (var name in style) {
+      var value = style[name];
+      if(name == 'opacity') {
+        if (value == 1) {
+          value = (/Gecko/.test(navigator.userAgent) &&
+            !/Konqueror|Safari|KHTML/.test(navigator.userAgent)) ? 0.999999 : 1.0;
+          if(/MSIE/.test(navigator.userAgent) && !window.opera)
+            element.style.filter = element.getStyle('filter').replace(/alpha\([^\)]*\)/gi,'');
+        } else if(value == '') {
+          if(/MSIE/.test(navigator.userAgent) && !window.opera)
+            element.style.filter = element.getStyle('filter').replace(/alpha\([^\)]*\)/gi,'');
+        } else {
+          if(value < 0.00001) value = 0;  
+          if(/MSIE/.test(navigator.userAgent) && !window.opera)
+            element.style.filter = element.getStyle('filter').replace(/alpha\([^\)]*\)/gi,'') +
+              'alpha(opacity='+value*100+')';
+        }
+      } else if(['float','cssFloat'].include(name)) name = (typeof element.style.styleFloat != 'undefined') ? 'styleFloat' : 'cssFloat';
+      element.style[name.camelize()] = value;
+    }
+    return element;
+  },
+  
+  getDimensions: function(element) {
+    element = $(element);
+    var display = $(element).getStyle('display');
+    if (display != 'none' && display != null) // Safari bug
+      return {width: element.offsetWidth, height: element.offsetHeight};
+    
+    // All *Width and *Height properties give 0 on elements with display none,
+    // so enable the element temporarily
+    var els = element.style;
+    var originalVisibility = els.visibility;
+    var originalPosition = els.position;
+    var originalDisplay = els.display;
+    els.visibility = 'hidden';
+    els.position = 'absolute';
+    els.display = 'block';
+    var originalWidth = element.clientWidth;
+    var originalHeight = element.clientHeight;
+    els.display = originalDisplay;
+    els.position = originalPosition;
+    els.visibility = originalVisibility;
+    return {width: originalWidth, height: originalHeight};    
+  },
+  
+  makePositioned: function(element) {
+    element = $(element);
+    var pos = Element.getStyle(element, 'position');
+    if (pos == 'static' || !pos) {
+      element._madePositioned = true;
+      element.style.position = 'relative';
+      // Opera returns the offset relative to the positioning context, when an
+      // element is position relative but top and left have not been defined
+      if (window.opera) {
+        element.style.top = 0;
+        element.style.left = 0;
+      }  
+    }
+    return element;
+  },
+
+  undoPositioned: function(element) {
+    element = $(element);
+    if (element._madePositioned) {
+      element._madePositioned = undefined;
+      element.style.position =
+        element.style.top =
+        element.style.left =
+        element.style.bottom =
+        element.style.right = '';   
+    }
+    return element;
+  },
+
+  makeClipping: function(element) {
+    element = $(element);
+    if (element._overflow) return element;
+    element._overflow = element.style.overflow || 'auto';
+    if ((Element.getStyle(element, 'overflow') || 'visible') != 'hidden')
+      element.style.overflow = 'hidden';
+    return element;
+  },
+
+  undoClipping: function(element) {
+    element = $(element);
+    if (!element._overflow) return element;
+    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
+    element._overflow = null;
+    return element;
+  }
+};
+
+Object.extend(Element.Methods, {childOf: Element.Methods.descendantOf});
+
+Element._attributeTranslations = {};
+
+Element._attributeTranslations.names = {
+  colspan:   "colSpan",
+  rowspan:   "rowSpan",
+  valign:    "vAlign",
+  datetime:  "dateTime",
+  accesskey: "accessKey",
+  tabindex:  "tabIndex",
+  enctype:   "encType",
+  maxlength: "maxLength",
+  readonly:  "readOnly",
+  longdesc:  "longDesc"
+};
+
+Element._attributeTranslations.values = {
+  _getAttr: function(element, attribute) {
+    return element.getAttribute(attribute, 2);
+  },
+  
+  _flag: function(element, attribute) {
+    return $(element).hasAttribute(attribute) ? attribute : null;
+  },
+  
+  style: function(element) {
+    return element.style.cssText.toLowerCase();
+  },
+  
+  title: function(element) {
+    var node = element.getAttributeNode('title');
+    return node.specified ? node.nodeValue : null;
+  }
+};
+
+Object.extend(Element._attributeTranslations.values, {
+  href: Element._attributeTranslations.values._getAttr,
+  src:  Element._attributeTranslations.values._getAttr,
+  disabled: Element._attributeTranslations.values._flag,
+  checked:  Element._attributeTranslations.values._flag,
+  readonly: Element._attributeTranslations.values._flag,
+  multiple: Element._attributeTranslations.values._flag
+});
+
+Element.Methods.Simulated = {
+  hasAttribute: function(element, attribute) {
+    var t = Element._attributeTranslations;
+    attribute = t.names[attribute] || attribute;
+    return $(element).getAttributeNode(attribute).specified;
+  }
+};
+
+// IE is missing .innerHTML support for TABLE-related elements
+if (document.all && !window.opera){
+  Element.Methods.update = function(element, html) {
+    element = $(element);
+    html = typeof html == 'undefined' ? '' : html.toString();
+    var tagName = element.tagName.toUpperCase();  
+    if (['THEAD','TBODY','TR','TD'].include(tagName)) {
+      var div = document.createElement('div');
+      switch (tagName) {
+        case 'THEAD':
+        case 'TBODY':
+          div.innerHTML = '<table><tbody>' +  html.stripScripts() + '</tbody></table>';
+          depth = 2;
+          break;
+        case 'TR':
+          div.innerHTML = '<table><tbody><tr>' +  html.stripScripts() + '</tr></tbody></table>';
+          depth = 3;
+          break;
+        case 'TD':
+          div.innerHTML = '<table><tbody><tr><td>' +  html.stripScripts() + '</td></tr></tbody></table>';
+          depth = 4;
+      }
+      $A(element.childNodes).each(function(node){
+        element.removeChild(node)
+      });
+      depth.times(function(){ div = div.firstChild });
+  
+      $A(div.childNodes).each(
+        function(node){ element.appendChild(node) });
+    } else {
+      element.innerHTML = html.stripScripts();
+    }
+    setTimeout(function() {html.evalScripts()}, 10);
+    return element;
+  }
+};
+
+Object.extend(Element, Element.Methods);
+
+var _nativeExtensions = false;
+
+if(/Konqueror|Safari|KHTML/.test(navigator.userAgent))
+  ['', 'Form', 'Input', 'TextArea', 'Select'].each(function(tag) {
+    var className = 'HTML' + tag + 'Element';
+    if(window[className]) return;
+    var klass = window[className] = {};
+    klass.prototype = document.createElement(tag ? tag.toLowerCase() : 'div').__proto__;
+  });
+
+Element.addMethods = function(methods) {
+  Object.extend(Element.Methods, methods || {});
+  
+  function copy(methods, destination, onlyIfAbsent) {
+    onlyIfAbsent = onlyIfAbsent || false;
+    var cache = Element.extend.cache;
+    for (var property in methods) {
+      var value = methods[property];
+      if (!onlyIfAbsent || !(property in destination))
+        destination[property] = cache.findOrStore(value);
+    }
+  }
+  
+  if (typeof HTMLElement != 'undefined') {
+    copy(Element.Methods, HTMLElement.prototype);
+    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
+    copy(Form.Methods, HTMLFormElement.prototype);
+    [HTMLInputElement, HTMLTextAreaElement, HTMLSelectElement].each(function(klass) {
+      copy(Form.Element.Methods, klass.prototype);
+    });
+    _nativeExtensions = true;
+  }
+}
+
+var Toggle = new Object();
+Toggle.display = Element.toggle;
+
+/*--------------------------------------------------------------------------*/
+
+Abstract.Insertion = function(adjacency) {
+  this.adjacency = adjacency;
+}
+
+Abstract.Insertion.prototype = {
+  initialize: function(element, content) {
+    this.element = $(element);
+    this.content = content.stripScripts();
+    
+    if (this.adjacency && this.element.insertAdjacentHTML) {
+      try {
+        this.element.insertAdjacentHTML(this.adjacency, this.content);
+      } catch (e) {
+        var tagName = this.element.tagName.toUpperCase();
+        if (['TBODY', 'TR'].include(tagName)) {
+          this.insertContent(this.contentFromAnonymousTable());
+        } else {
+          throw e;
+        }
+      }
+    } else {
+      this.range = this.element.ownerDocument.createRange();
+      if (this.initializeRange) this.initializeRange();
+      this.insertContent([this.range.createContextualFragment(this.content)]);
+    }
+
+    setTimeout(function() {content.evalScripts()}, 10);   
+  },
+  
+  contentFromAnonymousTable: function() {
+    var div = document.createElement('div');
+    div.innerHTML = '<table><tbody>' + this.content + '</tbody></table>';
+    return $A(div.childNodes[0].childNodes[0].childNodes);
+  }
+}
+
+var Insertion = new Object();
+
+Insertion.Before = Class.create();
+Insertion.Before.prototype = Object.extend(new Abstract.Insertion('beforeBegin'), {
+  initializeRange: function() {
+    this.range.setStartBefore(this.element);
+  },
+  
+  insertContent: function(fragments) {
+    fragments.each((function(fragment) {
+      this.element.parentNode.insertBefore(fragment, this.element);
+    }).bind(this));
+  }
+});
+
+Insertion.Top = Class.create();
+Insertion.Top.prototype = Object.extend(new Abstract.Insertion('afterBegin'), {
+  initializeRange: function() {
+    this.range.selectNodeContents(this.element);
+    this.range.collapse(true);
+  },
+  
+  insertContent: function(fragments) {
+    fragments.reverse(false).each((function(fragment) {
+      this.element.insertBefore(fragment, this.element.firstChild);
+    }).bind(this));
+  }
+});
+
+Insertion.Bottom = Class.create();
+Insertion.Bottom.prototype = Object.extend(new Abstract.Insertion('beforeEnd'), {
+  initializeRange: function() {
+    this.range.selectNodeContents(this.element);
+    this.range.collapse(this.element);
+  },
+  
+  insertContent: function(fragments) {
+    fragments.each((function(fragment) {
+      this.element.appendChild(fragment);
+    }).bind(this));
+  }
+});
+
+Insertion.After = Class.create();
+Insertion.After.prototype = Object.extend(new Abstract.Insertion('afterEnd'), {
+  initializeRange: function() {
+    this.range.setStartAfter(this.element);
+  },
+  
+  insertContent: function(fragments) {
+    fragments.each((function(fragment) {
+      this.element.parentNode.insertBefore(fragment, 
+        this.element.nextSibling);
+    }).bind(this));
+  }
+});
+
+/*--------------------------------------------------------------------------*/
+
+Element.ClassNames = Class.create();
+Element.ClassNames.prototype = {
+  initialize: function(element) {
+    this.element = $(element);
+  },
+
+  _each: function(iterator) {
+    this.element.className.split(/\s+/).select(function(name) {
+      return name.length > 0;
+    })._each(iterator);
+  },
+  
+  set: function(className) {
+    this.element.className = className;
+  },
+  
+  add: function(classNameToAdd) {
+    if (this.include(classNameToAdd)) return;
+    this.set($A(this).concat(classNameToAdd).join(' '));
+  },
+  
+  remove: function(classNameToRemove) {
+    if (!this.include(classNameToRemove)) return;
+    this.set($A(this).without(classNameToRemove).join(' '));
+  },
+  
+  toString: function() {
+    return $A(this).join(' ');
+  }
+};
+
+Object.extend(Element.ClassNames.prototype, Enumerable);
diff --git a/src/enumerable.js b/src/enumerable.js
new file mode 100644
index 0000000..9a157bb
--- /dev/null
+++ b/src/enumerable.js
@@ -0,0 +1,202 @@
+var $break    = new Object();
+var $continue = new Object();
+
+var Enumerable = {
+  each: function(iterator) {
+    var index = 0;
+    try {
+      this._each(function(value) {
+        try {
+          iterator(value, index++);
+        } catch (e) {
+          if (e != $continue) throw e;
+        }
+      });
+    } catch (e) {
+      if (e != $break) throw e;
+    }
+    return this;
+  },
+  
+  eachSlice: function(number, iterator) {
+    var index = -number, slices = [], array = this.toArray();
+    while ((index += number) < array.length)
+      slices.push(array.slice(index, index+number));
+    return slices.map(iterator);
+  },
+  
+  all: function(iterator) {
+    var result = true;
+    this.each(function(value, index) {
+      result = result && !!(iterator || Prototype.K)(value, index);
+      if (!result) throw $break;
+    });
+    return result;
+  },
+  
+  any: function(iterator) {
+    var result = false;
+    this.each(function(value, index) {
+      if (result = !!(iterator || Prototype.K)(value, index)) 
+        throw $break;
+    });
+    return result;
+  },
+  
+  collect: function(iterator) {
+    var results = [];
+    this.each(function(value, index) {
+      results.push((iterator || Prototype.K)(value, index));
+    });
+    return results;
+  },
+  
+  detect: function(iterator) {
+    var result;
+    this.each(function(value, index) {
+      if (iterator(value, index)) {
+        result = value;
+        throw $break;
+      }
+    });
+    return result;
+  },
+  
+  findAll: function(iterator) {
+    var results = [];
+    this.each(function(value, index) {
+      if (iterator(value, index))
+        results.push(value);
+    });
+    return results;
+  },
+  
+  grep: function(pattern, iterator) {
+    var results = [];
+    this.each(function(value, index) {
+      var stringValue = value.toString();
+      if (stringValue.match(pattern))
+        results.push((iterator || Prototype.K)(value, index));
+    })
+    return results;
+  },
+  
+  include: function(object) {
+    var found = false;
+    this.each(function(value) {
+      if (value == object) {
+        found = true;
+        throw $break;
+      }
+    });
+    return found;
+  },
+  
+  inGroupsOf: function(number, fillWith) {
+    fillWith = fillWith === undefined ? null : fillWith;
+    return this.eachSlice(number, function(slice) {
+      while(slice.length < number) slice.push(fillWith);
+      return slice;
+    });
+  },
+  
+  inject: function(memo, iterator) {
+    this.each(function(value, index) {
+      memo = iterator(memo, value, index);
+    });
+    return memo;
+  },
+  
+  invoke: function(method) {
+    var args = $A(arguments).slice(1);
+    return this.map(function(value) {
+      return value[method].apply(value, args);
+    });
+  },
+  
+  max: function(iterator) {
+    var result;
+    this.each(function(value, index) {
+      value = (iterator || Prototype.K)(value, index);
+      if (result == undefined || value >= result)
+        result = value;
+    });
+    return result;
+  },
+  
+  min: function(iterator) {
+    var result;
+    this.each(function(value, index) {
+      value = (iterator || Prototype.K)(value, index);
+      if (result == undefined || value < result)
+        result = value;
+    });
+    return result;
+  },
+  
+  partition: function(iterator) {
+    var trues = [], falses = [];
+    this.each(function(value, index) {
+      ((iterator || Prototype.K)(value, index) ? 
+        trues : falses).push(value);
+    });
+    return [trues, falses];
+  },
+  
+  pluck: function(property) {
+    var results = [];
+    this.each(function(value, index) {
+      results.push(value[property]);
+    });
+    return results;
+  },
+  
+  reject: function(iterator) {
+    var results = [];
+    this.each(function(value, index) {
+      if (!iterator(value, index))
+        results.push(value);
+    });
+    return results;
+  },
+  
+  sortBy: function(iterator) {
+    return this.map(function(value, index) {
+      return {value: value, criteria: iterator(value, index)};
+    }).sort(function(left, right) {
+      var a = left.criteria, b = right.criteria;
+      return a < b ? -1 : a > b ? 1 : 0;
+    }).pluck('value');
+  },
+  
+  toArray: function() {
+    return this.map();
+  },
+  
+  zip: function() {
+    var iterator = Prototype.K, args = $A(arguments);
+    if (typeof args.last() == 'function')
+      iterator = args.pop();
+
+    var collections = [this].concat(args).map($A);
+    return this.map(function(value, index) {
+      return iterator(collections.pluck(index));
+    });
+  },
+  
+  size: function() {
+    return this.toArray().length;
+  },
+  
+  inspect: function() {
+    return '#<Enumerable:' + this.toArray().inspect() + '>';
+  }
+}
+
+Object.extend(Enumerable, {
+  map:     Enumerable.collect,
+  find:    Enumerable.detect,
+  select:  Enumerable.findAll,
+  member:  Enumerable.include,
+  entries: Enumerable.toArray
+});
diff --git a/src/event.js b/src/event.js
new file mode 100644
index 0000000..2b4644c
--- /dev/null
+++ b/src/event.js
@@ -0,0 +1,114 @@
+if (!window.Event) {
+  var Event = new Object();
+}
+
+Object.extend(Event, {
+  KEY_BACKSPACE: 8,
+  KEY_TAB:       9,
+  KEY_RETURN:   13,
+  KEY_ESC:      27,
+  KEY_LEFT:     37,
+  KEY_UP:       38,
+  KEY_RIGHT:    39,
+  KEY_DOWN:     40,
+  KEY_DELETE:   46,
+  KEY_HOME:     36,
+  KEY_END:      35,
+  KEY_PAGEUP:   33,
+  KEY_PAGEDOWN: 34,
+
+  element: function(event) {
+    return event.target || event.srcElement;
+  },
+
+  isLeftClick: function(event) {
+    return (((event.which) && (event.which == 1)) ||
+            ((event.button) && (event.button == 1)));
+  },
+
+  pointerX: function(event) {
+    return event.pageX || (event.clientX + 
+      (document.documentElement.scrollLeft || document.body.scrollLeft));
+  },
+
+  pointerY: function(event) {
+    return event.pageY || (event.clientY + 
+      (document.documentElement.scrollTop || document.body.scrollTop));
+  },
+
+  stop: function(event) {
+    if (event.preventDefault) { 
+      event.preventDefault(); 
+      event.stopPropagation(); 
+    } else {
+      event.returnValue = false;
+      event.cancelBubble = true;
+    }
+  },
+
+  // find the first node with the given tagName, starting from the
+  // node the event was triggered on; traverses the DOM upwards
+  findElement: function(event, tagName) {
+    var element = Event.element(event);
+    while (element.parentNode && (!element.tagName ||
+        (element.tagName.toUpperCase() != tagName.toUpperCase())))
+      element = element.parentNode;
+    return element;
+  },
+
+  observers: false,
+  
+  _observeAndCache: function(element, name, observer, useCapture) {
+    if (!this.observers) this.observers = [];
+    if (element.addEventListener) {
+      this.observers.push([element, name, observer, useCapture]);
+      element.addEventListener(name, observer, useCapture);
+    } else if (element.attachEvent) {
+      this.observers.push([element, name, observer, useCapture]);
+      element.attachEvent('on' + name, observer);
+    }
+  },
+  
+  unloadCache: function() {
+    if (!Event.observers) return;
+    for (var i = 0, length = Event.observers.length; i < length; i++) {
+      Event.stopObserving.apply(this, Event.observers[i]);
+      Event.observers[i][0] = null;
+    }
+    Event.observers = false;
+  },
+
+  observe: function(element, name, observer, useCapture) {
+    element = $(element);
+    useCapture = useCapture || false;
+    
+    if (name == 'keypress' &&
+        (navigator.appVersion.match(/Konqueror|Safari|KHTML/)
+        || element.attachEvent))
+      name = 'keydown';
+    
+    Event._observeAndCache(element, name, observer, useCapture);
+  },
+
+  stopObserving: function(element, name, observer, useCapture) {
+    element = $(element);
+    useCapture = useCapture || false;
+    
+    if (name == 'keypress' &&
+        (navigator.appVersion.match(/Konqueror|Safari|KHTML/)
+        || element.detachEvent))
+      name = 'keydown';
+    
+    if (element.removeEventListener) {
+      element.removeEventListener(name, observer, useCapture);
+    } else if (element.detachEvent) {
+      try { 
+        element.detachEvent('on' + name, observer); 
+      } catch (e) {}
+    }
+  }
+});
+
+/* prevent memory leaks in IE */
+if (navigator.appVersion.match(/\bMSIE\b/))
+  Event.observe(window, 'unload', Event.unloadCache, false);
diff --git a/src/form.js b/src/form.js
new file mode 100644
index 0000000..fa2afa3
--- /dev/null
+++ b/src/form.js
@@ -0,0 +1,305 @@
+var Form = {
+  reset: function(form) {
+    $(form).reset();
+    return form;
+  },
+  
+  serializeElements: function(elements, getHash) {
+    var data = elements.inject({}, function(result, element) {
+      if (!element.disabled && element.name) {
+        var key = element.name, value = $(element).getValue();
+        if (value != undefined) {
+          if (result[key]) {
+            if (result[key].constructor != Array) result[key] = [result[key]];
+            result[key].push(value);
+          }
+          else result[key] = value;
+        }
+      }
+      return result;
+    });
+    
+    return getHash ? data : Hash.toQueryString(data);
+  }
+};
+
+Form.Methods = {
+  serialize: function(form, getHash) {
+    return Form.serializeElements(Form.getElements(form), getHash);
+  },
+  
+  getElements: function(form) {
+    return $A($(form).getElementsByTagName('*')).inject([], 
+      function(elements, child) {
+        if (Form.Element.Serializers[child.tagName.toLowerCase()])
+          elements.push(Element.extend(child));
+        return elements;
+      }
+    );
+  },
+  
+  getInputs: function(form, typeName, name) {
+    form = $(form);
+    var inputs = form.getElementsByTagName('input');
+    
+    if (!typeName && !name) return $A(inputs).map(Element.extend);
+      
+    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
+      var input = inputs[i];
+      if ((typeName && input.type != typeName) || (name && input.name != name))
+        continue;
+      matchingInputs.push(Element.extend(input));
+    }
+
+    return matchingInputs;
+  },
+
+  disable: function(form) {
+    form = $(form);
+    form.getElements().each(function(element) {
+      element.blur();
+      element.disabled = 'true';
+    });
+    return form;
+  },
+
+  enable: function(form) {
+    form = $(form);
+    form.getElements().each(function(element) {
+      element.disabled = '';
+    });
+    return form;
+  },
+
+  findFirstElement: function(form) {
+    return $(form).getElements().find(function(element) {
+      return element.type != 'hidden' && !element.disabled &&
+        ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
+    });
+  },
+
+  focusFirstElement: function(form) {
+    form = $(form);
+    form.findFirstElement().activate();
+    return form;
+  }
+}
+
+Object.extend(Form, Form.Methods);
+
+/*--------------------------------------------------------------------------*/
+
+Form.Element = {
+  focus: function(element) {
+    $(element).focus();
+    return element;
+  },
+
+  select: function(element) {
+    $(element).select();
+    return element;
+  }
+}
+
+Form.Element.Methods = {
+  serialize: function(element) {
+    element = $(element);
+    if (!element.disabled && element.name) {
+      var value = element.getValue();
+      if (value != undefined) {
+        var pair = {};
+        pair[element.name] = value;
+        return Hash.toQueryString(pair);
+      }
+    }
+    return '';
+  },
+  
+  getValue: function(element) {
+    element = $(element);
+    var method = element.tagName.toLowerCase();
+    return Form.Element.Serializers[method](element);
+  },
+
+  clear: function(element) {
+    $(element).value = '';
+    return element;
+  },
+
+  present: function(element) {
+    return $(element).value != '';
+  },
+  
+  activate: function(element) {
+    element = $(element);
+    element.focus();
+    if (element.select && ( element.tagName.toLowerCase() != 'input' ||
+      !['button', 'reset', 'submit'].include(element.type) ) )
+      element.select();
+    return element;
+  },
+  
+  disable: function(element) {
+    element = $(element);
+    element.disabled = true;
+    return element;
+  },
+  
+  enable: function(element) {
+    element = $(element);
+    element.blur();
+    element.disabled = false;
+    return element;
+  }
+}
+
+Object.extend(Form.Element, Form.Element.Methods);
+var Field = Form.Element;
+var $F = Form.Element.getValue;
+
+/*--------------------------------------------------------------------------*/
+
+Form.Element.Serializers = {
+  input: function(element) {
+    switch (element.type.toLowerCase()) {
+      case 'checkbox':  
+      case 'radio':
+        return Form.Element.Serializers.inputSelector(element);
+      default:
+        return Form.Element.Serializers.textarea(element);
+    }
+  },
+
+  inputSelector: function(element) {
+    return element.checked ? element.value : null;
+  },
+
+  textarea: function(element) {
+    return element.value;
+  },
+  
+  select: function(element) {
+    return this[element.type == 'select-one' ? 
+      'selectOne' : 'selectMany'](element);
+  },
+  
+  selectOne: function(element) {
+    var index = element.selectedIndex;
+    return index >= 0 ? this.optionValue(element.options[index]) : null;
+  },
+  
+  selectMany: function(element) {
+    var values, length = element.length;
+    if (!length) return null;
+    
+    for (var i = 0, values = []; i < length; i++) {
+      var opt = element.options[i];
+      if (opt.selected) values.push(this.optionValue(opt));
+    }
+    return values;
+  },
+  
+  optionValue: function(opt) {
+    // extend element because hasAttribute may not be native
+    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
+  }
+}
+
+/*--------------------------------------------------------------------------*/
+
+Abstract.TimedObserver = function() {}
+Abstract.TimedObserver.prototype = {
+  initialize: function(element, frequency, callback) {
+    this.frequency = frequency;
+    this.element   = $(element);
+    this.callback  = callback;
+    
+    this.lastValue = this.getValue();
+    this.registerCallback();
+  },
+  
+  registerCallback: function() {
+    setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
+  },
+  
+  onTimerEvent: function() {
+    var value = this.getValue();
+    var changed = ('string' == typeof this.lastValue && 'string' == typeof value
+      ? this.lastValue != value : String(this.lastValue) != String(value));
+    if (changed) {
+      this.callback(this.element, value);
+      this.lastValue = value;
+    }
+  }
+}
+
+Form.Element.Observer = Class.create();
+Form.Element.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
+  getValue: function() {
+    return Form.Element.getValue(this.element);
+  }
+});
+
+Form.Observer = Class.create();
+Form.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
+  getValue: function() {
+    return Form.serialize(this.element);
+  }
+});
+
+/*--------------------------------------------------------------------------*/
+
+Abstract.EventObserver = function() {}
+Abstract.EventObserver.prototype = {
+  initialize: function(element, callback) {
+    this.element  = $(element);
+    this.callback = callback;
+    
+    this.lastValue = this.getValue();
+    if (this.element.tagName.toLowerCase() == 'form')
+      this.registerFormCallbacks();
+    else
+      this.registerCallback(this.element);
+  },
+  
+  onElementEvent: function() {
+    var value = this.getValue();
+    if (this.lastValue != value) {
+      this.callback(this.element, value);
+      this.lastValue = value;
+    }
+  },
+  
+  registerFormCallbacks: function() {
+    Form.getElements(this.element).each(this.registerCallback.bind(this));
+  },
+  
+  registerCallback: function(element) {
+    if (element.type) {
+      switch (element.type.toLowerCase()) {
+        case 'checkbox':  
+        case 'radio':
+          Event.observe(element, 'click', this.onElementEvent.bind(this));
+          break;
+        default:
+          Event.observe(element, 'change', this.onElementEvent.bind(this));
+          break;
+      }
+    }    
+  }
+}
+
+Form.Element.EventObserver = Class.create();
+Form.Element.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
+  getValue: function() {
+    return Form.Element.getValue(this.element);
+  }
+});
+
+Form.EventObserver = Class.create();
+Form.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
+  getValue: function() {
+    return Form.serialize(this.element);
+  }
+});
+
diff --git a/src/hash.js b/src/hash.js
new file mode 100644
index 0000000..7089ba5
--- /dev/null
+++ b/src/hash.js
@@ -0,0 +1,91 @@
+var Hash = function(obj) {
+  Object.extend(this, obj || {});
+};
+
+Object.extend(Hash, {
+  toQueryString: function(obj) {
+    var parts = [];
+    
+	  this.prototype._each.call(obj, function(pair) {
+      if (!pair.key) return;
+      
+      if (pair.value && pair.value.constructor == Array) {
+        var values = pair.value.compact();
+        if (values.length < 2) pair.value = values.reduce();
+        else {
+        	key = encodeURIComponent(pair.key);
+          values.each(function(value) {
+            value = value != undefined ? encodeURIComponent(value) : '';
+            parts.push(key + '=' + encodeURIComponent(value));
+          });
+          return;
+        }
+      }
+      if (pair.value == undefined) pair[1] = '';
+      parts.push(pair.map(encodeURIComponent).join('='));
+	  });
+    
+    return parts.join('&');
+  }
+});
+
+Object.extend(Hash.prototype, Enumerable);
+Object.extend(Hash.prototype, {
+  _each: function(iterator) {
+    for (var key in this) {
+      var value = this[key];
+      if (value && value == Hash.prototype[key]) continue;
+      
+      var pair = [key, value];
+      pair.key = key;
+      pair.value = value;
+      iterator(pair);
+    }
+  },
+  
+  keys: function() {
+    return this.pluck('key');
+  },
+  
+  values: function() {
+    return this.pluck('value');
+  },
+  
+  merge: function(hash) {
+    return $H(hash).inject(this, function(mergedHash, pair) {
+      mergedHash[pair.key] = pair.value;
+      return mergedHash;
+    });
+  },
+
+  remove: function() {
+    var result;
+    for(var i = 0, length = arguments.length; i < length; i++) {
+      var value = this[arguments[i]];
+      if (value !== undefined){
+        if (result === undefined) result = value;
+        else {
+          if (result.constructor != Array) result = [result];
+          result.push(value)
+        }
+      }
+      delete this[arguments[i]];
+    }
+    return result;
+  },
+  
+  toQueryString: function() {
+    return Hash.toQueryString(this);
+  },
+  
+  inspect: function() {
+    return '#<Hash:{' + this.map(function(pair) {
+      return pair.map(Object.inspect).join(': ');
+    }).join(', ') + '}>';
+  }
+});
+
+function $H(object) {
+  if (object && object.constructor == Hash) return object;
+  return new Hash(object);
+};
diff --git a/src/position.js b/src/position.js
new file mode 100644
index 0000000..cab42a2
--- /dev/null
+++ b/src/position.js
@@ -0,0 +1,225 @@
+var Position = {
+  // set to true if needed, warning: firefox performance problems
+  // NOT neeeded for page scrolling, only if draggable contained in
+  // scrollable elements
+  includeScrollOffsets: false, 
+
+  // must be called before calling withinIncludingScrolloffset, every time the
+  // page is scrolled
+  prepare: function() {
+    this.deltaX =  window.pageXOffset 
+                || document.documentElement.scrollLeft 
+                || document.body.scrollLeft 
+                || 0;
+    this.deltaY =  window.pageYOffset 
+                || document.documentElement.scrollTop 
+                || document.body.scrollTop 
+                || 0;
+  },
+
+  realOffset: function(element) {
+    var valueT = 0, valueL = 0;
+    do {
+      valueT += element.scrollTop  || 0;
+      valueL += element.scrollLeft || 0; 
+      element = element.parentNode;
+    } while (element);
+    return [valueL, valueT];
+  },
+
+  cumulativeOffset: function(element) {
+    var valueT = 0, valueL = 0;
+    do {
+      valueT += element.offsetTop  || 0;
+      valueL += element.offsetLeft || 0;
+      element = element.offsetParent;
+    } while (element);
+    return [valueL, valueT];
+  },
+
+  positionedOffset: function(element) {
+    var valueT = 0, valueL = 0;
+    do {
+      valueT += element.offsetTop  || 0;
+      valueL += element.offsetLeft || 0;
+      element = element.offsetParent;
+      if (element) {
+        if(element.tagName=='BODY') break;
+        var p = Element.getStyle(element, 'position');
+        if (p == 'relative' || p == 'absolute') break;
+      }
+    } while (element);
+    return [valueL, valueT];
+  },
+  
+  offsetParent: function(element) {
+    if (element.offsetParent) return element.offsetParent;
+    if (element == document.body) return element;
+
+    while ((element = element.parentNode) && element != document.body)
+      if (Element.getStyle(element, 'position') != 'static')
+        return element;
+
+    return document.body;
+  },
+  
+  // caches x/y coordinate pair to use with overlap
+  within: function(element, x, y) {
+    if (this.includeScrollOffsets)
+      return this.withinIncludingScrolloffsets(element, x, y);
+    this.xcomp = x;
+    this.ycomp = y;
+    this.offset = this.cumulativeOffset(element);
+
+    return (y >= this.offset[1] &&
+            y <  this.offset[1] + element.offsetHeight &&
+            x >= this.offset[0] && 
+            x <  this.offset[0] + element.offsetWidth);
+  },
+
+  withinIncludingScrolloffsets: function(element, x, y) {
+    var offsetcache = this.realOffset(element);
+
+    this.xcomp = x + offsetcache[0] - this.deltaX;
+    this.ycomp = y + offsetcache[1] - this.deltaY;
+    this.offset = this.cumulativeOffset(element);
+
+    return (this.ycomp >= this.offset[1] &&
+            this.ycomp <  this.offset[1] + element.offsetHeight &&
+            this.xcomp >= this.offset[0] && 
+            this.xcomp <  this.offset[0] + element.offsetWidth);
+  },
+
+  // within must be called directly before
+  overlap: function(mode, element) {  
+    if (!mode) return 0;  
+    if (mode == 'vertical') 
+      return ((this.offset[1] + element.offsetHeight) - this.ycomp) / 
+        element.offsetHeight;
+    if (mode == 'horizontal')
+      return ((this.offset[0] + element.offsetWidth) - this.xcomp) / 
+        element.offsetWidth;
+  },
+
+  page: function(forElement) {
+    var valueT = 0, valueL = 0;
+
+    var element = forElement;
+    do {
+      valueT += element.offsetTop  || 0;
+      valueL += element.offsetLeft || 0;
+
+      // Safari fix
+      if (element.offsetParent==document.body)
+        if (Element.getStyle(element,'position')=='absolute') break;
+
+    } while (element = element.offsetParent);
+
+    element = forElement;
+    do {
+      if (!window.opera || element.tagName=='BODY') {
+        valueT -= element.scrollTop  || 0;
+        valueL -= element.scrollLeft || 0;
+      }
+    } while (element = element.parentNode);
+
+    return [valueL, valueT];
+  },
+
+  clone: function(source, target) {
+    var options = Object.extend({
+      setLeft:    true,
+      setTop:     true,
+      setWidth:   true,
+      setHeight:  true,
+      offsetTop:  0,
+      offsetLeft: 0
+    }, arguments[2] || {})
+
+    // find page position of source
+    source = $(source);
+    var p = Position.page(source);
+
+    // find coordinate system to use
+    target = $(target);
+    var delta = [0, 0];
+    var parent = null;
+    // delta [0,0] will do fine with position: fixed elements, 
+    // position:absolute needs offsetParent deltas
+    if (Element.getStyle(target,'position') == 'absolute') {
+      parent = Position.offsetParent(target);
+      delta = Position.page(parent);
+    }
+
+    // correct by body offsets (fixes Safari)
+    if (parent == document.body) {
+      delta[0] -= document.body.offsetLeft;
+      delta[1] -= document.body.offsetTop; 
+    }
+
+    // set position
+    if(options.setLeft)   target.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
+    if(options.setTop)    target.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
+    if(options.setWidth)  target.style.width = source.offsetWidth + 'px';
+    if(options.setHeight) target.style.height = source.offsetHeight + 'px';
+  },
+
+  absolutize: function(element) {
+    element = $(element);
+    if (element.style.position == 'absolute') return;
+    Position.prepare();
+
+    var offsets = Position.positionedOffset(element);
+    var top     = offsets[1];
+    var left    = offsets[0];
+    var width   = element.clientWidth;
+    var height  = element.clientHeight;
+
+    element._originalLeft   = left - parseFloat(element.style.left  || 0);
+    element._originalTop    = top  - parseFloat(element.style.top || 0);
+    element._originalWidth  = element.style.width;
+    element._originalHeight = element.style.height;
+
+    element.style.position = 'absolute';
+    element.style.top    = top + 'px';
+    element.style.left   = left + 'px';
+    element.style.width  = width + 'px';
+    element.style.height = height + 'px';
+  },
+
+  relativize: function(element) {
+    element = $(element);
+    if (element.style.position == 'relative') return;
+    Position.prepare();
+
+    element.style.position = 'relative';
+    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
+    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);
+
+    element.style.top    = top + 'px';
+    element.style.left   = left + 'px';
+    element.style.height = element._originalHeight;
+    element.style.width  = element._originalWidth;
+  }
+}
+
+// Safari returns margins on body which is incorrect if the child is absolutely
+// positioned.  For performance reasons, redefine Position.cumulativeOffset for
+// KHTML/WebKit only.
+if (/Konqueror|Safari|KHTML/.test(navigator.userAgent)) {
+  Position.cumulativeOffset = function(element) {
+    var valueT = 0, valueL = 0;
+    do {
+      valueT += element.offsetTop  || 0;
+      valueL += element.offsetLeft || 0;
+      if (element.offsetParent == document.body)
+        if (Element.getStyle(element, 'position') == 'absolute') break;
+        
+      element = element.offsetParent;
+    } while (element);
+    
+    return [valueL, valueT];
+  }
+}
+
+
diff --git a/src/prototype.js b/src/prototype.js
new file mode 100644
index 0000000..3cab972
--- /dev/null
+++ b/src/prototype.js
@@ -0,0 +1,20 @@
+<%= include 'HEADER' %>
+
+var Prototype = {
+  Version: '<%= PROTOTYPE_VERSION %>',
+  BrowserFeatures: {
+    XPath: !!document.evaluate
+  },
+  
+  ScriptFragment: '(?:<script.*?>)((\n|\r|.)*?)(?:<\/script>)',
+  emptyFunction: function() {},
+  K: function(x) { return x }
+}
+
+<%= include 'base.js', 'string.js' %>
+
+<%= include 'enumerable.js', 'array.js', 'hash.js', 'range.js' %>
+
+<%= include 'ajax.js', 'dom.js', 'selector.js', 'form.js', 'event.js', 'position.js' %>
+
+Element.addMethods();
diff --git a/src/range.js b/src/range.js
new file mode 100644
index 0000000..3f412c4
--- /dev/null
+++ b/src/range.js
@@ -0,0 +1,29 @@
+ObjectRange = Class.create();
+Object.extend(ObjectRange.prototype, Enumerable);
+Object.extend(ObjectRange.prototype, {
+  initialize: function(start, end, exclusive) {
+    this.start = start;
+    this.end = end;
+    this.exclusive = exclusive;
+  },
+  
+  _each: function(iterator) {
+    var value = this.start;
+    while (this.include(value)) {
+      iterator(value);
+      value = value.succ();
+    }
+  },
+  
+  include: function(value) {
+    if (value < this.start) 
+      return false;
+    if (this.exclusive)
+      return value < this.end;
+    return value <= this.end;
+  }
+});
+
+var $R = function(start, end, exclusive) {
+  return new ObjectRange(start, end, exclusive);
+}
\ No newline at end of file
diff --git a/src/selector.js b/src/selector.js
new file mode 100644
index 0000000..b655ede
--- /dev/null
+++ b/src/selector.js
@@ -0,0 +1,129 @@
+var Selector = Class.create();
+Selector.prototype = {
+  initialize: function(expression) {
+    this.params = {classNames: []};
+    this.expression = expression.toString().strip();
+    this.parseExpression();
+    this.compileMatcher();
+  },
+
+  parseExpression: function() {
+    function abort(message) { throw 'Parse error in selector: ' + message; }
+
+    if (this.expression == '')  abort('empty expression');
+
+    var params = this.params, expr = this.expression, match, modifier, clause, rest;
+    while (match = expr.match(/^(.*)\[([a-z0-9_:-]+?)(?:([~\|!]?=)(?:"([^"]*)"|([^\]\s]*)))?\]$/i)) {
+      params.attributes = params.attributes || [];
+      params.attributes.push({name: match[2], operator: match[3], value: match[4] || match[5] || ''});
+      expr = match[1];
+    }
+
+    if (expr == '*') return this.params.wildcard = true;
+    
+    while (match = expr.match(/^([^a-z0-9_-])?([a-z0-9_-]+)(.*)/i)) {
+      modifier = match[1], clause = match[2], rest = match[3];
+      switch (modifier) {
+        case '#':       params.id = clause; break;
+        case '.':       params.classNames.push(clause); break;
+        case '':
+        case undefined: params.tagName = clause.toUpperCase(); break;
+        default:        abort(expr.inspect());
+      }
+      expr = rest;
+    }
+    
+    if (expr.length > 0) abort(expr.inspect());
+  },
+
+  buildMatchExpression: function() {
+    var params = this.params, conditions = [], clause;
+
+    if (params.wildcard)
+      conditions.push('true');
+    if (clause = params.id)
+      conditions.push('element.readAttribute("id") == ' + clause.inspect());
+    if (clause = params.tagName)
+      conditions.push('element.tagName.toUpperCase() == ' + clause.inspect());
+    if ((clause = params.classNames).length > 0)
+      for (var i = 0, length = clause.length; i < length; i++)
+        conditions.push('element.hasClassName(' + clause[i].inspect() + ')');
+    if (clause = params.attributes) {
+      clause.each(function(attribute) {
+        var value = 'element.readAttribute(' + attribute.name.inspect() + ')';
+        var splitValueBy = function(delimiter) {
+          return value + ' && ' + value + '.split(' + delimiter.inspect() + ')';
+        }
+        
+        switch (attribute.operator) {
+          case '=':       conditions.push(value + ' == ' + attribute.value.inspect()); break;
+          case '~=':      conditions.push(splitValueBy(' ') + '.include(' + attribute.value.inspect() + ')'); break;
+          case '|=':      conditions.push(
+                            splitValueBy('-') + '.first().toUpperCase() == ' + attribute.value.toUpperCase().inspect()
+                          ); break;
+          case '!=':      conditions.push(value + ' != ' + attribute.value.inspect()); break;
+          case '':
+          case undefined: conditions.push('element.hasAttribute(' + attribute.name.inspect() + ')'); break;
+          default:        throw 'Unknown operator ' + attribute.operator + ' in selector';
+        }
+      });
+    }
+
+    return conditions.join(' && ');
+  },
+
+  compileMatcher: function() {
+    this.match = new Function('element', 'if (!element.tagName) return false; \
+      element = $(element); \
+      return ' + this.buildMatchExpression());
+  },
+
+  findElements: function(scope) {
+    var element;
+
+    if (element = $(this.params.id))
+      if (this.match(element))
+        if (!scope || Element.childOf(element, scope))
+          return [element];
+
+    scope = (scope || document).getElementsByTagName(this.params.tagName || '*');
+
+    var results = [];
+    for (var i = 0, length = scope.length; i < length; i++)
+      if (this.match(element = scope[i]))
+        results.push(Element.extend(element));
+
+    return results;
+  },
+
+  toString: function() {
+    return this.expression;
+  }
+}
+
+Object.extend(Selector, {
+  matchElements: function(elements, expression) {
+    var selector = new Selector(expression);
+    return elements.select(selector.match.bind(selector)).map(Element.extend);
+  },
+  
+  findElement: function(elements, expression, index) {
+    if (typeof expression == 'number') index = expression, expression = false;
+    return Selector.matchElements(elements, expression || '*')[index || 0];
+  },
+  
+  findChildElements: function(element, expressions) {
+    return expressions.map(function(expression) {
+      return expression.match(/[^\s"]+(?:"[^"]*"[^\s"]+)*/g).inject([null], function(results, expr) {
+        var selector = new Selector(expr);
+        return results.inject([], function(elements, result) {
+          return elements.concat(selector.findElements(result || element));
+        });
+      });
+    }).flatten();
+  }
+});
+
+function $$() {
+  return Selector.findChildElements(document, $A(arguments));
+}
diff --git a/src/string.js b/src/string.js
new file mode 100644
index 0000000..2cf17ef
--- /dev/null
+++ b/src/string.js
@@ -0,0 +1,170 @@
+String.interpret = function(value){
+  return value == null ? '' : String(value);
+}
+
+Object.extend(String.prototype, {
+  gsub: function(pattern, replacement) {
+    var result = '', source = this, match;
+    replacement = arguments.callee.prepareReplacement(replacement);
+    
+    while (source.length > 0) {
+      if (match = source.match(pattern)) {
+        result += source.slice(0, match.index);
+        result += String.interpret(replacement(match));
+        source  = source.slice(match.index + match[0].length);
+      } else {
+        result += source, source = '';
+      }
+    }
+    return result;
+  },
+  
+  sub: function(pattern, replacement, count) {
+    replacement = this.gsub.prepareReplacement(replacement);
+    count = count === undefined ? 1 : count;
+    
+    return this.gsub(pattern, function(match) {
+      if (--count < 0) return match[0];
+      return replacement(match);
+    });
+  },
+  
+  scan: function(pattern, iterator) {
+    this.gsub(pattern, iterator);
+    return this;
+  },
+  
+  truncate: function(length, truncation) {
+    length = length || 30;
+    truncation = truncation === undefined ? '...' : truncation;
+    return this.length > length ? 
+      this.slice(0, length - truncation.length) + truncation : this;
+  },
+
+  strip: function() {
+    return this.replace(/^\s+/, '').replace(/\s+$/, '');
+  },
+  
+  stripTags: function() {
+    return this.replace(/<\/?[^>]+>/gi, '');
+  },
+
+  stripScripts: function() {
+    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
+  },
+  
+  extractScripts: function() {
+    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
+    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
+    return (this.match(matchAll) || []).map(function(scriptTag) {
+      return (scriptTag.match(matchOne) || ['', ''])[1];
+    });
+  },
+  
+  evalScripts: function() {
+    return this.extractScripts().map(function(script) { return eval(script) });
+  },
+
+  escapeHTML: function() {
+    var div = document.createElement('div');
+    var text = document.createTextNode(this);
+    div.appendChild(text);
+    return div.innerHTML;
+  },
+
+  unescapeHTML: function() {
+    var div = document.createElement('div');
+    div.innerHTML = this.stripTags();
+    return div.childNodes[0] ? (div.childNodes.length > 1 ? 
+      $A(div.childNodes).inject('',function(memo,node){ return memo+node.nodeValue }) : 
+      div.childNodes[0].nodeValue) : '';
+  },
+  
+  toQueryParams: function(separator) {
+    var match = this.strip().match(/([^?#]*)(#.*)?$/);
+    if (!match) return {};
+    
+    return match[1].split(separator || '&').inject({}, function(hash, pair) {
+      if ((pair = pair.split('='))[0]) {
+        var name = decodeURIComponent(pair[0]);
+        var value = pair[1] ? decodeURIComponent(pair[1]) : undefined;
+
+        if (hash[name] !== undefined) {
+          if (hash[name].constructor != Array)
+            hash[name] = [hash[name]];
+          if (value) hash[name].push(value);
+        }
+        else hash[name] = value;
+      }
+      return hash;
+    });
+  },
+  
+  toArray: function() {
+    return this.split('');
+  },
+
+  succ: function() {
+    return this.slice(0, this.length - 1) +
+      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
+  },
+
+  camelize: function() {
+    var parts = this.split('-'), len = parts.length;
+    if (len == 1) return parts[0];
+    
+    var camelized = this.charAt(0) == '-' 
+      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
+      : parts[0];
+    
+    for (var i = 1; i < len; i++)
+      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);
+   
+    return camelized;
+  },
+  
+  capitalize: function(){
+    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
+  },
+  
+  underscore: function() {
+    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
+  },
+
+  dasherize: function() {
+    return this.gsub(/_/,'-');
+  },
+
+  inspect: function(useDoubleQuotes) {
+    var escapedString = this.replace(/\\/g, '\\\\');
+    if (useDoubleQuotes)
+      return '"' + escapedString.replace(/"/g, '\\"') + '"';
+    else
+      return "'" + escapedString.replace(/'/g, '\\\'') + "'";
+  }
+});
+
+String.prototype.gsub.prepareReplacement = function(replacement) {
+  if (typeof replacement == 'function') return replacement;
+  var template = new Template(replacement);
+  return function(match) { return template.evaluate(match) };
+}
+
+String.prototype.parseQuery = String.prototype.toQueryParams;
+
+var Template = Class.create();
+Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
+Template.prototype = {
+  initialize: function(template, pattern) {
+    this.template = template.toString();
+    this.pattern  = pattern || Template.Pattern;
+  },
+  
+  evaluate: function(object) {
+    return this.template.gsub(this.pattern, function(match) {
+      var before = match[1];
+      if (before == '\\') return match[2];
+      return before + String.interpret(object[match[3]]);
+    });
+  }
+}
diff --git a/test/browser.html b/test/browser.html
new file mode 100644
index 0000000..ec699f9
--- /dev/null
+++ b/test/browser.html
@@ -0,0 +1,229 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html>
+  <head>
+    <meta http-equiv="Content-type" content="text/html; charset=utf-8" />
+    <title>Prototype object browser</title>
+    <style type="text/css" media="screen">
+      body {
+        font-family: Lucida Grande, Verdana, sans-serif;
+        font-size: 13px;
+      }
+      
+      .inspector {
+        margin: 1%;
+        float: left;
+        width: 31%;
+        border: 1px solid #ccc;
+        background-color: white;
+      }
+      
+      .inspector h2 {
+        font-size: 13px;
+        margin: 0;
+        text-align: center;
+        padding: 5px;
+        background-color: #e6e6e6;
+        border-bottom: 1px solid #999;
+      }
+      
+      .inspector ul {
+        height: 200px;
+        overflow: auto;
+        margin: 0;
+        padding-left: 0;
+      }
+      
+      .inspector li {
+        cursor: pointer;
+        list-style-type: none;
+        padding: 2px 5px 2px 30px;
+        color: #333;
+      }
+      
+      .inspector li.selected {
+        background-color: #888;
+        color: #fff;
+      }
+      
+      .inspector.active li.selected {
+        background-color: #1a76fd;
+        color: #fff;
+      }
+      
+      #path, #value {
+        width: 97%;
+        margin: 1%;
+      }
+
+      #path {
+        margin-bottom: 0;
+        border: 1px solid #ccc;
+        border-bottom: 1px solid #999;
+        background-color: #e6e6e6;
+      }
+      
+      #value {
+        margin-top: 0;
+        border: 1px solid #ccc;
+        border-top: none;
+        overflow: auto;
+      }
+      
+      #path_content, #value_content {
+        display: block;
+        padding: 15px 30px 15px 30px;
+      }
+      
+    </style>    
+    <script type="text/javascript" src="../dist/prototype.js"></script>
+    <script type="text/javascript">
+      var Browser = Class.create();
+      Browser.prototype = {
+        initialize: function(element, name, value, options) {
+          this.element = $(element);
+          this.name    = name;
+          this.value   = value;
+          this.history = [];
+          Object.extend(this, options || {});
+          this.reset();
+        },
+        
+        reset: function() {
+          this.go(this.name, this.value);
+        },
+        
+        refresh: function() {
+          var children = $A(this.element.childNodes),
+              history  = this.history.toArray(),
+              elements = history.slice(-3).pluck('element');
+                  
+          children.each(function(element) {
+            if (element && !elements.include(element))
+              this.element.removeChild(element);
+          }.bind(this));
+          
+          children = $A(this.element.childNodes);
+          
+          elements.each(function(element, index) {
+            Element.removeClassName(element, 'active');
+            var child = children[index];
+            if (!child)
+              this.element.appendChild(element);
+            else if (!element.parentNode)
+              this.element.insertBefore(element, child);
+          }.bind(this));
+          
+          this.setTitle();
+          this.setValue();
+        },
+        
+        setTitle: function() {
+          if (this.titleElement)
+            this.titleElement.innerHTML =
+              this.history.pluck('name').invoke('escapeHTML').join('.');
+        },
+        
+        setValue: function() {
+          if (this.valueElement)
+            this.valueElement.innerHTML = 
+              this.currentValue().escapeHTML() + '&nbsp;';
+        },
+        
+        currentValue: function() {
+          try {
+            return Object.inspect(this.current());
+          } catch (e) {
+            return '(Internal Function)';
+          }
+        },
+        
+        current: function() {
+          return this.history.last().value;
+        },
+        
+        go: function(name, value) {
+          var from = this.history.last();
+          this.history.push(new Inspector(this, name, value));
+          this.refresh();
+          if (from) 
+            Element.addClassName(from.element, 'active');
+        }
+      }
+      
+      var Inspector = Class.create();
+      Inspector.prototype = {
+        initialize: function(browser, name, value) {
+          this.browser = browser;
+          this.name    = name;
+          this.value   = value;
+          this.id      = 'inspector_' + new Date().getTime();
+          this.history = this.browser.history.toArray();
+          this.history.push(this);
+          this.createElement();
+          this.populate();
+        },
+        
+        properties: function() {
+          var properties = [];
+          for (var property in this.value)
+            properties.push(property);
+          properties.sort();
+          return properties;
+        },
+        
+        createElement: function() {
+          var element = document.createElement('div');
+          element.className = 'inspector';
+          element.id = this.id;
+          this.element = element;
+          
+          var title = document.createElement('h2');
+          title.innerHTML = this.name.toString().escapeHTML();
+          this.titleElement = title;
+          
+          var list = document.createElement('ul');
+          this.listElement = list;
+          
+          element.appendChild(title);
+          element.appendChild(list);          
+        },
+        
+        populate: function() {
+          this.properties().each(function(property) {
+            var li = document.createElement('li');
+            li.innerHTML = property.toString().escapeHTML();
+            li.onclick   = this.select.bind(this, li);
+            li._property = property;
+            this.listElement.appendChild(li);
+          }.bind(this));
+        },
+        
+        select: function(element) {
+          this.unselect();
+          Element.addClassName(element, 'selected');
+          this.selectedProperty = element;
+          this.browser.history = this.history.toArray();
+          this.browser.go(element._property, this.value[element._property]);
+        },
+        
+        unselect: function() {
+          if (this.selectedProperty)
+            Element.removeClassName(this.selectedProperty, 'selected');
+          this.selectedProperty = null;
+        }
+      }
+    </script>
+  </head>
+  <body>
+    <div id="browser_wrapper">
+      <div id="browser"></div>
+      <div style="clear: left"></div>
+    </div>
+    <h1 id="path"><span id="path_content"></span></h1>
+    <pre id="value"><div id="value_content"></div></pre>
+    <script type="text/javascript">
+      new Browser('browser', 'window', window, {titleElement: $('path_content'), valueElement: $('value_content')})
+    </script>
+  </body>
+</html>
\ No newline at end of file
diff --git a/test/console.html b/test/console.html
new file mode 100644
index 0000000..2b586ee
--- /dev/null
+++ b/test/console.html
@@ -0,0 +1,110 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
+        "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> 
+  <head>
+    <title>Prototype Console</title>
+    <script src="../dist/prototype.js" type="text/javascript"></script>
+    <script type="text/javascript">
+      Prototype.Console = Class.create();
+      Prototype.Console.prototype = {
+        initialize: function(element, form, input) {
+          this.element = $(element);
+          this.form    = $(form);
+          this.input   = $(input);
+          this.context = window.eval.bind(window);
+          this.registerCallbacks();
+          document.title = 'Prototype Console ' + Prototype.Version;
+          Field.activate(this.input);
+        },
+        
+        registerCallbacks: function() {
+          Event.observe(this.form, 'submit', function(event) {
+            this.eval($F(this.input));
+            this.input.value = '';
+            Field.activate(this.input);
+            Event.stop(event);
+          }.bind(this));
+        },
+        
+        log: function(type, message) {
+          new Insertion.Bottom(this.element, 
+            '<tr class="' + type + '"><td>' +
+            message.escapeHTML() + '</td></tr>');
+          Element.scrollTo(this.form);
+        },
+        
+        eval: function(expression) {
+          if (expression.match(/^\s*$/)) return;
+          try {
+            this.log('input', expression);
+            window.$_ = this.context.call(window, expression);
+            this.log('output', Object.inspect($_));
+          } catch (e) {
+            this.log('error', e.toString());
+          }
+        },
+        
+        clear: function() {
+          this.element.innerHTML = '';
+        }
+      }
+    </script>
+    <style type="text/css">
+      body {
+        margin: 0;
+        padding: 0;
+      }
+      
+      .console {
+        width: 100%;
+        border-collapse: collapse;
+        margin-bottom: 50px;
+      }
+    
+      .console td {
+        padding: 5px;
+        font-family: monospace;
+        font-size: 14px;
+      }
+      
+      .console tr.input td {
+        background-color: #eee;
+        font-weight: bold;
+      }
+      
+      .console tr.error td,
+      .console tr.output td {
+        color: #333;
+        border-bottom: 1px solid #ccc;
+      }
+      
+      .console tr.error td {
+        color: #f00;
+      }
+      
+      #input-form {
+        width: 100%;
+        background-color: #f0f5b8;
+        border-top: 1px solid #333;
+        padding: 10px;
+        position: fixed;
+        height: 25px;
+        bottom: 0;
+        margin: 0;
+      }
+    </style>
+  </head>
+  <body>
+    <table class="console">
+      <tbody id="console">
+      </tbody>
+    </table>
+    <form id="input-form">
+      <input type="text" size="60" id="input" />
+      <input type="submit" value="Evaluate" />
+    </form>
+    <script type="text/javascript">
+      window.console = new Prototype.Console('console', 'input-form', 'input');
+    </script>
+  </body>
+</html>
diff --git a/test/lib/jstest.rb b/test/lib/jstest.rb
new file mode 100644
index 0000000..736c82e
--- /dev/null
+++ b/test/lib/jstest.rb
@@ -0,0 +1,227 @@
+require 'rake/tasklib'
+require 'thread'
+require 'webrick'
+
+class Browser
+  def supported?; true; end
+  def setup ; end
+  def open(url) ; end
+  def teardown ; end
+
+  def host
+    require 'rbconfig'
+    Config::CONFIG['host']
+  end
+  
+  def macos?
+    host.include?('darwin')
+  end
+  
+  def windows?
+    host.include?('mswin')
+  end
+  
+  def linux?
+    host.include?('linux')
+  end
+  
+  def applescript(script)
+    raise "Can't run AppleScript on #{host}" unless macos?
+    system "osascript -e '#{script}' 2>&1 >/dev/null"
+  end
+end
+
+class FirefoxBrowser < Browser
+  def initialize(path='c:\Program Files\Mozilla Firefox\firefox.exe')
+    @path = path
+  end
+
+  def visit(url)
+    applescript('tell application "Firefox" to Get URL "' + url + '"') if macos? 
+    system("#{@path} #{url}") if windows? 
+    system("firefox #{url}") if linux?
+  end
+
+  def to_s
+    "Firefox"
+  end
+end
+
+class SafariBrowser < Browser
+  def supported?
+    macos?
+  end
+  
+  def setup
+    applescript('tell application "Safari" to make new document')
+  end
+  
+  def visit(url)
+    applescript('tell application "Safari" to set URL of front document to "' + url + '"')
+  end
+
+  def teardown
+    #applescript('tell application "Safari" to close front document')
+  end
+
+  def to_s
+    "Safari"
+  end
+end
+
+class IEBrowser < Browser
+  def initialize(path='C:\Program Files\Internet Explorer\IEXPLORE.EXE')
+    @path = path
+  end
+  
+  def setup
+    if windows?
+      puts %{
+        MAJOR ANNOYANCE on Windows.
+        You have to shut down the Internet Explorer manually after each test
+        for the script to proceed.
+        Any suggestions on fixing this is GREATLY appreaciated!
+        Thank you for your understanding.
+      }
+    end
+  end
+
+  def supported?
+    windows?
+  end
+  
+  def visit(url)
+    system("#{@path} #{url}") if windows? 
+  end
+
+  def to_s
+    "Internet Explorer"
+  end
+end
+
+class KonquerorBrowser < Browser
+  def supported?
+    linux?
+  end
+  
+  def visit(url)
+    system("kfmclient openURL #{url}")
+  end
+  
+  def to_s
+    "Konqueror"
+  end
+end
+
+# shut up, webrick :-)
+class ::WEBrick::HTTPServer
+  def access_log(config, req, res)
+    # nop
+  end
+end
+class ::WEBrick::BasicLog
+  def log(level, data)
+    # nop
+  end
+end
+
+class NonCachingFileHandler < WEBrick::HTTPServlet::FileHandler
+  def do_GET(req, res)
+    super
+    
+    res['Content-Type'] = case req.path
+      when /\.js$/   then 'text/javascript'
+      when /\.html$/ then 'text/html'
+      when /\.css$/  then 'text/css'
+      else 'text/plain'
+    end
+    
+    res['ETag'] = nil
+    res['Last-Modified'] = Time.now + 100**4
+    res['Cache-Control'] = 'no-store, no-cache, must-revalidate, post-check=0, pre-check=0'
+    res['Pragma'] = 'no-cache'
+    res['Expires'] = Time.now - 100**4
+  end
+end
+
+
+class JavaScriptTestTask < ::Rake::TaskLib
+
+  def initialize(name=:test)
+    @name = name
+    @tests = []
+    @browsers = []
+
+    @queue = Queue.new
+
+    result = []
+
+    @server = WEBrick::HTTPServer.new(:Port => 4711) # TODO: make port configurable
+    @server.mount_proc("/results") do |req, res|
+      @queue.push(req.query['result'])
+      res.body = "OK"
+    end
+    @server.mount_proc("/content-type") do |req, res|
+      res.body = req["content-type"]
+    end
+    
+    yield self if block_given?
+    define
+  end
+
+  def define
+    task @name do
+      trap("INT") { @server.shutdown }
+      t = Thread.new { @server.start }
+
+      # run all combinations of browsers and tests
+      @browsers.each do |browser|
+        if browser.supported?
+          browser.setup
+          @tests.each do |test|
+            browser.visit("http://localhost:4711#{test}?resultsURL=http://localhost:4711/results&t=" + ("%.6f" % Time.now.to_f))
+            result = @queue.pop
+            puts "#{test} on #{browser}: #{result}"
+          end
+          browser.teardown
+        else
+          puts "Skipping #{browser}, not supported on this OS"
+        end
+        browser.teardown
+      end
+
+      @server.shutdown
+      t.join
+    end
+  end
+
+  def mount(path, dir=nil)
+    dir = Dir.pwd + path unless dir
+
+    # don't cache anything in our tests
+    @server.mount(path, NonCachingFileHandler, dir)
+  end
+
+  # test should be specified as a url
+  def run(test)
+    @tests<<test
+  end
+
+  def browser(browser)
+    browser =
+      case(browser)
+        when :firefox
+          FirefoxBrowser.new
+        when :safari
+          SafariBrowser.new
+        when :ie
+          IEBrowser.new
+        when :konqueror
+          KonquerorBrowser.new
+        else
+          browser
+      end
+
+    @browsers<<browser
+  end
+end
diff --git a/test/lib/unittest.js b/test/lib/unittest.js
new file mode 100644
index 0000000..861c5e0
--- /dev/null
+++ b/test/lib/unittest.js
@@ -0,0 +1,497 @@
+// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+//           (c) 2005 Jon Tirsen (http://www.tirsen.com)
+//           (c) 2005 Michael Schuerig (http://www.schuerig.de/michael/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+// experimental, Firefox-only
+Event.simulateMouse = function(element, eventName) {
+  var options = Object.extend({
+    pointerX: 0,
+    pointerY: 0,
+    buttons: 0
+  }, arguments[2] || {});
+  var oEvent = document.createEvent("MouseEvents");
+  oEvent.initMouseEvent(eventName, true, true, document.defaultView, 
+    options.buttons, options.pointerX, options.pointerY, options.pointerX, options.pointerY, 
+    false, false, false, false, 0, $(element));
+  
+  if(this.mark) Element.remove(this.mark);
+  this.mark = document.createElement('div');
+  this.mark.appendChild(document.createTextNode(" "));
+  document.body.appendChild(this.mark);
+  this.mark.style.position = 'absolute';
+  this.mark.style.top = options.pointerY + "px";
+  this.mark.style.left = options.pointerX + "px";
+  this.mark.style.width = "5px";
+  this.mark.style.height = "5px;";
+  this.mark.style.borderTop = "1px solid red;"
+  this.mark.style.borderLeft = "1px solid red;"
+  
+  if(this.step)
+    alert('['+new Date().getTime().toString()+'] '+eventName+'/'+Test.Unit.inspect(options));
+  
+  $(element).dispatchEvent(oEvent);
+};
+
+// Note: Due to a fix in Firefox 1.0.5/6 that probably fixed "too much", this doesn't work in 1.0.6 or DP2.
+// You need to downgrade to 1.0.4 for now to get this working
+// See https://bugzilla.mozilla.org/show_bug.cgi?id=289940 for the fix that fixed too much
+Event.simulateKey = function(element, eventName) {
+  var options = Object.extend({
+    ctrlKey: false,
+    altKey: false,
+    shiftKey: false,
+    metaKey: false,
+    keyCode: 0,
+    charCode: 0
+  }, arguments[2] || {});
+
+  var oEvent = document.createEvent("KeyEvents");
+  oEvent.initKeyEvent(eventName, true, true, window, 
+    options.ctrlKey, options.altKey, options.shiftKey, options.metaKey,
+    options.keyCode, options.charCode );
+  $(element).dispatchEvent(oEvent);
+};
+
+Event.simulateKeys = function(element, command) {
+  for(var i=0; i<command.length; i++) {
+    Event.simulateKey(element,'keypress',{charCode:command.charCodeAt(i)});
+  }
+};
+
+var Test = {}
+Test.Unit = {};
+
+// security exception workaround
+Test.Unit.inspect = Object.inspect;
+
+Test.Unit.Logger = Class.create();
+Test.Unit.Logger.prototype = {
+  initialize: function(log) {
+    this.log = $(log);
+    if (this.log) {
+      this._createLogTable();
+    }
+  },
+  start: function(testName) {
+    if (!this.log) return;
+    this.testName = testName;
+    this.lastLogLine = document.createElement('tr');
+    this.statusCell = document.createElement('td');
+    this.nameCell = document.createElement('td');
+    this.nameCell.appendChild(document.createTextNode(testName));
+    this.messageCell = document.createElement('td');
+    this.lastLogLine.appendChild(this.statusCell);
+    this.lastLogLine.appendChild(this.nameCell);
+    this.lastLogLine.appendChild(this.messageCell);
+    this.loglines.appendChild(this.lastLogLine);
+  },
+  finish: function(status, summary) {
+    if (!this.log) return;
+    this.lastLogLine.className = status;
+    this.statusCell.innerHTML = status;
+    this.messageCell.innerHTML = this._toHTML(summary);
+  },
+  message: function(message) {
+    if (!this.log) return;
+    this.messageCell.innerHTML = this._toHTML(message);
+  },
+  summary: function(summary) {
+    if (!this.log) return;
+    this.logsummary.innerHTML = this._toHTML(summary);
+  },
+  _createLogTable: function() {
+    this.log.innerHTML =
+    '<div id="logsummary"></div>' +
+    '<table id="logtable">' +
+    '<thead><tr><th>Status</th><th>Test</th><th>Message</th></tr></thead>' +
+    '<tbody id="loglines"></tbody>' +
+    '</table>';
+    this.logsummary = $('logsummary')
+    this.loglines = $('loglines');
+  },
+  _toHTML: function(txt) {
+    return txt.escapeHTML().replace(/\n/g,"<br/>");
+  }
+}
+
+Test.Unit.Runner = Class.create();
+Test.Unit.Runner.prototype = {
+  initialize: function(testcases) {
+    this.options = Object.extend({
+      testLog: 'testlog'
+    }, arguments[1] || {});
+    this.options.resultsURL = this.parseResultsURLQueryParameter();
+    if (this.options.testLog) {
+      this.options.testLog = $(this.options.testLog) || null;
+    }
+    if(this.options.tests) {
+      this.tests = [];
+      for(var i = 0; i < this.options.tests.length; i++) {
+        if(/^test/.test(this.options.tests[i])) {
+          this.tests.push(new Test.Unit.Testcase(this.options.tests[i], testcases[this.options.tests[i]], testcases["setup"], testcases["teardown"]));
+        }
+      }
+    } else {
+      if (this.options.test) {
+        this.tests = [new Test.Unit.Testcase(this.options.test, testcases[this.options.test], testcases["setup"], testcases["teardown"])];
+      } else {
+        this.tests = [];
+        for(var testcase in testcases) {
+          if(/^test/.test(testcase)) {
+            this.tests.push(new Test.Unit.Testcase(testcase, testcases[testcase], testcases["setup"], testcases["teardown"]));
+          }
+        }
+      }
+    }
+    this.currentTest = 0;
+    this.logger = new Test.Unit.Logger(this.options.testLog);
+    setTimeout(this.runTests.bind(this), 1000);
+  },
+  parseResultsURLQueryParameter: function() {
+    return window.location.search.parseQuery()["resultsURL"];
+  },
+  // Returns:
+  //  "ERROR" if there was an error,
+  //  "FAILURE" if there was a failure, or
+  //  "SUCCESS" if there was neither
+  getResult: function() {
+    var hasFailure = false;
+    for(var i=0;i<this.tests.length;i++) {
+      if (this.tests[i].errors > 0) {
+        return "ERROR";
+      }
+      if (this.tests[i].failures > 0) {
+        hasFailure = true;
+      }
+    }
+    if (hasFailure) {
+      return "FAILURE";
+    } else {
+      return "SUCCESS";
+    }
+  },
+  postResults: function() {
+    if (this.options.resultsURL) {
+      new Ajax.Request(this.options.resultsURL, 
+        { method: 'get', parameters: 'result=' + this.getResult(), asynchronous: false });
+    }
+  },
+  runTests: function() {
+    var test = this.tests[this.currentTest];
+    if (!test) {
+      // finished!
+      this.postResults();
+      this.logger.summary(this.summary());
+      return;
+    }
+    if(!test.isWaiting) {
+      this.logger.start(test.name);
+    }
+    test.run();
+    if(test.isWaiting) {
+      this.logger.message("Waiting for " + test.timeToWait + "ms");
+      setTimeout(this.runTests.bind(this), test.timeToWait || 1000);
+    } else {
+      this.logger.finish(test.status(), test.summary());
+      var actionButtons = test.actionButtons();
+      if (actionButtons) 
+        $(this.logger.lastLogLine).down('td', 2).appendChild(actionButtons);
+        
+      this.currentTest++;
+      // tail recursive, hopefully the browser will skip the stackframe
+      this.runTests();
+    }
+  },
+  summary: function() {
+    var assertions = 0;
+    var failures = 0;
+    var errors = 0;
+    var messages = [];
+    for(var i=0;i<this.tests.length;i++) {
+      assertions +=   this.tests[i].assertions;
+      failures   +=   this.tests[i].failures;
+      errors     +=   this.tests[i].errors;
+    }
+    return (
+      this.tests.length + " tests, " + 
+      assertions + " assertions, " + 
+      failures   + " failures, " +
+      errors     + " errors");
+  }
+}
+
+Test.Unit.Assertions = Class.create();
+Test.Unit.Assertions.prototype = {
+  initialize: function() {
+    this.assertions = 0;
+    this.failures   = 0;
+    this.errors     = 0;
+    this.messages   = [];
+    this.actions    = {};
+  },
+  summary: function() {
+    return (
+      this.assertions + " assertions, " + 
+      this.failures   + " failures, " +
+      this.errors     + " errors" + "\n" +
+      this.messages.join("\n"));
+  },
+  actionButtons: function() {
+    if (!Object.keys(this.actions).any()) return false;
+    var div = $(document.createElement("div"));
+    div.addClassName("action_buttons");
+  
+    for (var title in this.actions) {
+      var button = $(document.createElement("input"));
+      button.value = title;
+      button.type = "button";
+      button.observe("click", this.actions[title]);
+      div.appendChild(button);
+    }
+    return div;
+  },
+  pass: function() {
+    this.assertions++;
+  },
+  fail: function(message) {
+    this.failures++;
+    this.messages.push("Failure: " + message);
+  },
+  info: function(message) {
+    this.messages.push("Info: " + message);
+  },
+  error: function(error, test) {
+    this.errors++;
+    this.actions['retry with throw'] = function() { test.run(true) };
+    this.messages.push(error.name + ": "+ error.message + "(" + Test.Unit.inspect(error) + ")");
+  },
+  status: function() {
+    if (this.failures > 0) return 'failed';
+    if (this.errors > 0) return 'error';
+    return 'passed';
+  },
+  assert: function(expression) {
+    var message = arguments[1] || 'assert: got "' + Test.Unit.inspect(expression) + '"';
+    try { expression ? this.pass() : 
+      this.fail(message); }
+    catch(e) { this.error(e); }
+  },
+  assertEqual: function(expected, actual) {
+    var message = arguments[2] || "assertEqual";
+    try { (expected == actual) ? this.pass() :
+      this.fail(message + ': expected "' + Test.Unit.inspect(expected) + 
+        '", actual "' + Test.Unit.inspect(actual) + '"'); }
+    catch(e) { this.error(e); }
+  },
+  assertEnumEqual: function(expected, actual) {
+    var message = arguments[2] || "assertEnumEqual";
+    try { $A(expected).length == $A(actual).length && 
+      expected.zip(actual).all(function(pair) { return pair[0] == pair[1] }) ?
+        this.pass() : this.fail(message + ': expected ' + Test.Unit.inspect(expected) + 
+          ', actual ' + Test.Unit.inspect(actual)); }
+    catch(e) { this.error(e); }
+  },
+  assertNotEqual: function(expected, actual) {
+    var message = arguments[2] || "assertNotEqual";
+    try { (expected != actual) ? this.pass() : 
+      this.fail(message + ': got "' + Test.Unit.inspect(actual) + '"'); }
+    catch(e) { this.error(e); }
+  },
+  assertIdentical: function(expected, actual) { 
+    var message = arguments[2] || "assertIdentical"; 
+    try { (expected === actual) ? this.pass() : 
+      this.fail(message + ': expected "' + Test.Unit.inspect(expected) +  
+        '", actual "' + Test.Unit.inspect(actual) + '"'); } 
+    catch(e) { this.error(e); } 
+  },
+  assertNotIdentical: function(expected, actual) { 
+    var message = arguments[2] || "assertNotIdentical"; 
+    try { !(expected === actual) ? this.pass() : 
+      this.fail(message + ': expected "' + Test.Unit.inspect(expected) +  
+        '", actual "' + Test.Unit.inspect(actual) + '"'); } 
+    catch(e) { this.error(e); } 
+  },
+  assertNull: function(obj) {
+    var message = arguments[1] || 'assertNull'
+    try { (obj===null) ? this.pass() : 
+     this.fail(message + ': got "' + Test.Unit.inspect(obj) + '"'); }
+    catch(e) { this.error(e); }
+  },
+  assertNotNull: function(obj) {
+    var message = arguments[1] || 'assertNotNull'
+    try { (obj!==null) ? this.pass() : 
+     this.fail(message + ': got "' + Test.Unit.inspect(obj) + '"'); }
+    catch(e) { this.error(e); }
+  },
+  assertUndefined: function(obj) {
+    var message = arguments[1] || 'assertUndefined'
+    try { (typeof obj=="undefined") ? this.pass() :
+      this.fail(message + ': got "' + Test.Unit.inspect(obj) + '"'); }
+    catch(e) { this.error(e); }
+  },
+  assertNotUndefined: function(obj) {
+    var message = arguments[1] || 'assertNotUndefined'
+    try { (typeof obj != "undefined") ? this.pass() :
+      this.fail(message + ': got "' + Test.Unit.inspect(obj) + '"'); }
+    catch(e) { this.error(e); }
+  },
+  assertNullOrUndefined: function(obj){
+    var message = arguments[1] || 'assertNullOrUndefined'
+    try { (obj==null) ? this.pass() :
+      this.fail(message + ': got "' + Test.Unit.inspect(obj) + '"'); }
+    catch(e) { this.error(e); }
+  },
+  assertNotNullOrUndefined: function(obj){
+    var message = arguments[1] || 'assertNotNullOrUndefined'
+    try { (obj!=null) ? this.pass() :
+      this.fail(message + ': got "' + Test.Unit.inspect(obj) + '"'); }
+    catch(e) { this.error(e); }
+  },
+  assertMatch: function(expected, actual) {
+    var message = arguments[2] || 'assertMatch';
+    var regex = new RegExp(expected);
+    try { (regex.exec(actual)) ? this.pass() :
+      this.fail(message + ' : regex: "' +  Test.Unit.inspect(expected) + ' did not match: ' + Test.Unit.inspect(actual) + '"'); }
+    catch(e) { this.error(e); }
+  },
+  assertHidden: function(element) {
+    var message = arguments[1] || 'assertHidden';
+    this.assertEqual("none", element.style.display, message);
+  },
+  assertNotNull: function(object) {
+    var message = arguments[1] || 'assertNotNull';
+    this.assert(object != null, message);
+  },
+  assertInstanceOf: function(expected, actual) {
+    var message = arguments[2] || 'assertInstanceOf';
+    try { 
+      (actual instanceof expected) ? this.pass() : 
+      this.fail(message + ": object was not an instance of the expected type"); }
+    catch(e) { this.error(e); } 
+  },
+  assertNotInstanceOf: function(expected, actual) {
+    var message = arguments[2] || 'assertNotInstanceOf';
+    try { 
+      !(actual instanceof expected) ? this.pass() : 
+      this.fail(message + ": object was an instance of the not expected type"); }
+    catch(e) { this.error(e); } 
+  },
+  assertRespondsTo: function(method, obj) {
+    var message = arguments[2] || 'assertRespondsTo';
+    try {
+      (obj[method] && typeof obj[method] == 'function') ? this.pass() : 
+      this.fail(message + ": object doesn't respond to [" + method + "]"); }
+    catch(e) { this.error(e); }
+  },
+  assertRaise: function(exceptionName, method) {
+    var message = arguments[2] || 'assertRaise';
+    try { 
+      method();
+      this.fail(message + ": exception expected but none was raised"); }
+    catch(e) {
+      (e.name==exceptionName) ? this.pass() : this.error(e); 
+    }
+  },
+  assertNothingRaised: function(method) {
+    var message = arguments[1] || 'assertNothingRaised';
+    try {
+      method();
+      this.pass();
+    } catch (e) {
+      this.fail(message + ": " + e.toString());
+    }
+  },
+  _isVisible: function(element) {
+    element = $(element);
+    if(!element.parentNode) return true;
+    this.assertNotNull(element);
+    if(element.style && Element.getStyle(element, 'display') == 'none')
+      return false;
+    
+    return this._isVisible(element.parentNode);
+  },
+  assertNotVisible: function(element) {
+    this.assert(!this._isVisible(element), Test.Unit.inspect(element) + " was not hidden and didn't have a hidden parent either. " + ("" || arguments[1]));
+  },
+  assertVisible: function(element) {
+    this.assert(this._isVisible(element), Test.Unit.inspect(element) + " was not visible. " + ("" || arguments[1]));
+  },
+  assertElementsMatch: function() {
+    var expressions = $A(arguments), elements = $A(expressions.shift());
+    if (elements.length != expressions.length) {
+      this.fail('assertElementsMatch: size mismatch: ' + elements.length + ' elements, ' + expressions.length + ' expressions');
+      return false;
+    }
+    elements.zip(expressions).all(function(pair, index) {
+      var element = $(pair.first()), expression = pair.last();
+      if (element.match(expression)) return true;
+      this.fail('assertElementsMatch: (in index ' + index + ') expected ' + expression.inspect() + ' but got ' + element.inspect());
+    }.bind(this)) && this.pass();
+  },
+  assertElementMatches: function(element, expression) {
+    this.assertElementsMatch([element], expression);
+  },
+  benchmark: function(operation, iterations) {
+    var startAt = new Date();
+    (iterations || 1).times(operation);
+    var timeTaken = ((new Date())-startAt);
+    this.info((arguments[2] || 'Operation') + ' finished ' + 
+       iterations + ' iterations in ' + (timeTaken/1000)+'s' );
+    return timeTaken;
+  }
+}
+
+Test.Unit.Testcase = Class.create();
+Object.extend(Object.extend(Test.Unit.Testcase.prototype, Test.Unit.Assertions.prototype), {
+  initialize: function(name, test, setup, teardown) {
+    Test.Unit.Assertions.prototype.initialize.bind(this)();
+    this.name           = name;
+    this.test           = test || function() {};
+    this.setup          = setup || function() {};
+    this.teardown       = teardown || function() {};
+    this.isWaiting      = false;
+    this.timeToWait     = 1000;
+  },
+  wait: function(time, nextPart) {
+    this.isWaiting = true;
+    this.test = nextPart;
+    this.timeToWait = time;
+  },
+  run: function(rethrow) {
+    try {
+      try {
+        if (!this.isWaiting) this.setup.bind(this)();
+        this.isWaiting = false;
+        this.test.bind(this)();
+      } finally {
+        if(!this.isWaiting) {
+          this.teardown.bind(this)();
+        }
+      }
+    }
+    catch(e) { 
+      if (rethrow) throw e;
+      this.error(e, this); 
+    }
+  }
+});
diff --git a/test/test.css b/test/test.css
new file mode 100644
index 0000000..bf9b2a8
--- /dev/null
+++ b/test/test.css
@@ -0,0 +1,49 @@
+body, div, p, h1, h2, h3, ul, ol, span, a, table, td, form, img, li {
+  font-family: sans-serif;
+}
+
+body {
+  font-size:0.8em;
+}
+
+#log {
+  padding-bottom: 1em;
+  border-bottom: 2px solid #000;
+  margin-bottom: 2em;
+}
+
+#logsummary {
+  margin-bottom: 1em;
+  padding: 1ex;
+  border: 1px solid #000;
+  font-weight: bold;
+}
+
+#logtable {
+  width:100%;
+  border-collapse: collapse;
+  border: 1px dotted #666;
+}
+
+#logtable td, #logtable th {
+  text-align: left;
+  padding: 3px 8px;
+  border: 1px dotted #666;
+}
+
+#logtable .passed {
+  background-color: #cfc;
+}
+
+#logtable .failed, #logtable .error {
+  background-color: #fcc;
+}
+
+#logtable td div.action_buttons {
+  display: inline;
+}
+
+#logtable td div.action_buttons input {
+  margin: 0 5px;
+  font-size: 10px;
+}
\ No newline at end of file
diff --git a/test/unit/ajax.html b/test/unit/ajax.html
new file mode 100644
index 0000000..095bca8
--- /dev/null
+++ b/test/unit/ajax.html
@@ -0,0 +1,174 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+  <title>Prototype Unit test file</title>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8" />
+  <script src="../../dist/prototype.js" type="text/javascript"></script>
+  <script src="../lib/unittest.js" type="text/javascript"></script>
+  <link rel="stylesheet" href="../test.css" type="text/css" />
+  <style type="text/css" media="screen">
+  /* <![CDATA[ */
+    #testcss1 { font-size:11px; color: #f00; }
+    #testcss2 { font-size:12px; color: #0f0; display: none; }
+  /* ]]> */
+  </style>
+</head>
+<body>
+<h1>Prototype Unit test file</h1>
+<p>
+  Test of utility functions in ajax.js
+</p>
+
+<!-- Log output -->
+<div id="testlog"> </div>
+<div id="content"></div>
+<div id="content2" style="color:red"></div>
+
+<!-- Tests follow -->
+<script type="text/javascript" language="javascript" charset="utf-8">
+// <![CDATA[
+  var responderCounter = 0;
+
+  new Test.Unit.Runner({
+    
+    setup: function(){
+      $('content').update('');
+      $('content2').update('');
+    },
+    
+    teardown: function(){
+      // hack to cleanup responders
+      Ajax.Responders.responders = [Ajax.Responders.responders[0]];
+    },
+    
+    testSynchronousRequest: function() {with(this) {
+      assertEqual("", $("content").innerHTML);
+      
+      assertEqual(0, Ajax.activeRequestCount);
+      new Ajax.Request("fixtures/hello.js", {
+        asynchronous: false,
+        method: 'GET',
+        onComplete: function(response) { eval(response.responseText) }
+      });
+      assertEqual(0, Ajax.activeRequestCount);
+      
+      var h2 = $("content").firstChild;
+      assertEqual("Hello world!", h2.innerHTML);
+    }},
+    
+    testAsynchronousRequest: function() {with(this) {
+      assertEqual("", $("content").innerHTML);
+      
+      new Ajax.Request("fixtures/hello.js", {
+        asynchronous: true,
+        method: 'get',
+        onComplete: function(response) { eval(response.responseText) }
+      });
+      wait(1000,function(){
+        var h2 = $("content").firstChild;
+        assertEqual("Hello world!", h2.innerHTML);
+      });
+    }},
+    
+    testUpdater: function() {with(this) {
+      assertEqual("", $("content").innerHTML);
+      
+      new Ajax.Updater("content", "fixtures/content.html", { method:'get' });
+      
+      // lowercase comparison because of MSIE which presents HTML tags in uppercase
+      var sentence = ("Pack my box with <em>five dozen</em> liquor jugs! " +
+        "Oh, how <strong>quickly</strong> daft jumping zebras vex...").toLowerCase();
+
+      wait(1000,function(){
+        assertEqual(sentence, $("content").innerHTML.strip().toLowerCase());
+        
+        $('content').update('');
+        assertEqual("", $("content").innerHTML);
+         
+        new Ajax.Updater({ success:"content", failure:"content2" },
+          "fixtures/content.html", { method:'get', parameters:{ pet:'monkey' } });
+        
+        new Ajax.Updater("", "fixtures/content.html", { method:'get', parameters:"pet=monkey" });
+        
+        wait(1000,function(){
+          assertEqual(sentence, $("content").innerHTML.strip().toLowerCase());
+          assertEqual("", $("content2").innerHTML);
+        });
+      });
+    }},
+    
+    testResponders: function(){with(this) {
+      // check for internal responder
+      assertEqual(1, Ajax.Responders.responders.length);
+      
+      var dummyResponder = {
+        onComplete: function(req){ /* dummy */ }
+      };
+      
+      Ajax.Responders.register(dummyResponder);
+      assertEqual(2, Ajax.Responders.responders.length);
+      
+      // don't add twice
+      Ajax.Responders.register(dummyResponder);
+      assertEqual(2, Ajax.Responders.responders.length);
+      
+      Ajax.Responders.unregister(dummyResponder);
+      assertEqual(1, Ajax.Responders.responders.length);
+      
+      var responder = {
+        onCreate:   function(req){ responderCounter++ },
+        onLoading:  function(req){ responderCounter++ },
+        onComplete: function(req){ responderCounter++ }
+      };
+      Ajax.Responders.register(responder);
+      
+      assertEqual(0, responderCounter);
+      assertEqual(0, Ajax.activeRequestCount);
+      new Ajax.Request("fixtures/content.html", { method:'get', parameters:"pet=monkey" });
+      assertEqual(1, responderCounter);
+      assertEqual(1, Ajax.activeRequestCount);
+      
+      wait(1000,function(){
+        assertEqual(3, responderCounter);
+        assertEqual(0, Ajax.activeRequestCount);
+      });
+    }},
+    
+    testEvalResponseShouldBeCalledBeforeOnComplete: function() {with(this) {
+      assertEqual("", $("content").innerHTML);
+      
+      assertEqual(0, Ajax.activeRequestCount);
+      new Ajax.Request("fixtures/hello.js", {
+        asynchronous: false,
+        method: 'GET',
+        onComplete: function(response) { assertNotEqual("", $("content").innerHTML) }
+      });
+      assertEqual(0, Ajax.activeRequestCount);
+      
+      var h2 = $("content").firstChild;
+      assertEqual("Hello world!", h2.innerHTML);
+    }},
+    
+    testContentTypeSetForSimulatedVerbs: function() {with(this) {
+      var isRunningFromRake = true;
+      
+      new Ajax.Request('/content-type', {
+        method: 'put',
+        contentType: 'application/bogus',
+        asynchronous: false,
+        onFailure: function() {
+          isRunningFromRake = false;
+        },
+        onComplete: function(response) {
+          if (isRunningFromRake)
+            assertEqual('application/bogus; charset=UTF-8', response.responseText);
+        }
+      });
+    }}
+    
+  }, 'testlog');
+// ]]>
+</script>
+</body>
+</html>
diff --git a/test/unit/array.html b/test/unit/array.html
new file mode 100644
index 0000000..6c0cc55
--- /dev/null
+++ b/test/unit/array.html
@@ -0,0 +1,152 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+  <title>Prototype Unit test file</title>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8" />
+  <script src="../../dist/prototype.js" type="text/javascript"></script>
+  <script src="../lib/unittest.js" type="text/javascript"></script>
+  <link rel="stylesheet" href="../test.css" type="text/css" />
+  <style type="text/css" media="screen">
+  /* <![CDATA[ */
+    #testcss1 { font-size:11px; color: #f00; }
+    #testcss2 { font-size:12px; color: #0f0; display: none; }
+  /* ]]> */
+  </style>
+</head>
+<body>
+<h1>Prototype Unit test file</h1>
+<p>
+  Test of the Array.prototype extensions
+</p>
+
+<!-- Log output -->
+<div id="testlog"> </div>
+
+<!-- Tests follow -->
+<script type="text/javascript" language="javascript" charset="utf-8">
+// <![CDATA[
+
+  var globalArgsTest = 'nothing to see here';
+
+  new Test.Unit.Runner({
+    
+    testToArrayOnArguments: function(){ with(this) {
+      function toArrayOnArguments(){
+        globalArgsTest = $A(arguments);
+      }
+      toArrayOnArguments();
+      assertEnumEqual([], globalArgsTest);
+      toArrayOnArguments('foo');
+      assertEnumEqual(['foo'], globalArgsTest);
+      toArrayOnArguments('foo','bar');
+      assertEnumEqual(['foo','bar'], globalArgsTest);
+    }},
+    
+    testClear: function(){ with(this) {
+      assertEnumEqual([], [].clear());
+      assertEnumEqual([], [1].clear());
+      assertEnumEqual([], [1,2].clear());
+    }},
+    
+    testClone: function(){ with(this) {
+      assertEnumEqual([], [].clone());
+      assertEnumEqual([1], [1].clone());
+      assertEnumEqual([1,2], [1,2].clone());
+      assertEnumEqual([0,1,2], [0,1,2].clone());
+      var a = [0,1,2];
+      var b = a;
+      assertIdentical(a, b);
+      b = a.clone();
+      assertNotIdentical(a, b);
+    }},
+    
+    testFirst: function(){ with(this) {
+      assertUndefined([].first());
+      assertEqual(1, [1].first());
+      assertEqual(1, [1,2].first());
+    }},
+    
+    testLast: function(){ with(this) {
+      assertUndefined([].last());
+      assertEqual(1, [1].last());
+      assertEqual(2, [1,2].last());
+    }},
+    
+    testCompact: function(){ with(this) {
+      assertEnumEqual([],      [].compact());
+      assertEnumEqual([1,2,3], [1,2,3].compact());
+      assertEnumEqual([0,1,2,3], [0,null,1,2,undefined,3].compact());
+      assertEnumEqual([1,2,3], [null,1,2,3,null].compact());
+    }},
+    
+    testFlatten: function(){ with(this) {
+      assertEnumEqual([],      [].flatten());
+      assertEnumEqual([1,2,3], [1,2,3].flatten());
+      assertEnumEqual([1,2,3], [1,[[[2,3]]]].flatten());
+      assertEnumEqual([1,2,3], [[1],[2],[3]].flatten());
+      assertEnumEqual([1,2,3], [[[[[[[1]]]]]],2,3].flatten());
+    }},
+    
+    testIndexOf: function(){ with(this) {
+      assertEqual(-1, [].indexOf(1));
+      assertEqual(-1, [0].indexOf(1));
+      assertEqual(0, [1].indexOf(1));
+      assertEqual(1, [0,1,2].indexOf(1));
+    }},
+    
+    testInspect: function(){ with(this) {
+      assertEqual('[]',[].inspect());
+      assertEqual('[1]',[1].inspect());
+      assertEqual('[\'a\']',['a'].inspect());
+      assertEqual('[\'a\', 1]',['a',1].inspect());
+    }},
+    
+    testReduce: function(){ with(this) {
+      assertUndefined([].reduce());
+      assertNull([null].reduce());
+      assertEqual(1, [1].reduce());
+      assertEnumEqual([1,2,3], [1,2,3].reduce());
+      assertEnumEqual([1,null,3], [1,null,3].reduce());
+    }},
+    
+    testReverse: function(){ with(this) {
+      assertEnumEqual([], [].reverse());
+      assertEnumEqual([1], [1].reverse());
+      assertEnumEqual([2,1], [1,2].reverse());
+      assertEnumEqual([3,2,1], [1,2,3].reverse());
+    }},
+    
+    testSize: function(){ with(this) {
+      assertEqual(4, [0, 1, 2, 3].size());
+      assertEqual(0, [].size());
+    }},
+
+    testUniq: function(){ with(this) {
+      assertEnumEqual([1], [1, 1, 1].uniq());
+      assertEnumEqual([1], [1].uniq());
+      assertEnumEqual([], [].uniq());
+      assertEnumEqual([0, 1, 2, 3], [0, 1, 2, 2, 3, 0, 2].uniq());
+    }},
+    
+    testWithout: function(){ with(this) {
+      assertEnumEqual([], [].without(0));
+      assertEnumEqual([], [0].without(0));
+      assertEnumEqual([1], [0,1].without(0));
+      assertEnumEqual([1,2], [0,1,2].without(0));
+    }},
+    
+    test$w: function(){ with(this) {
+      assertEnumEqual(['a', 'b', 'c', 'd'], $w('a b c d'));
+      assertEnumEqual([], $w(' '));
+      assertEnumEqual(['a'], $w('a'));
+      assertEnumEqual(['a'], $w('a '));
+      assertEnumEqual(['a'], $w(' a'));
+      assertEnumEqual(['a', 'b', 'c', 'd'], $w(' a   b\nc\t\nd\n'));
+    }}
+
+  }, 'testlog');
+// ]]>
+</script>
+</body>
+</html>
diff --git a/test/unit/base.html b/test/unit/base.html
new file mode 100644
index 0000000..fbd5269
--- /dev/null
+++ b/test/unit/base.html
@@ -0,0 +1,133 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+  <title>Prototype Unit test file</title>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8" />
+  <script src="../../dist/prototype.js" type="text/javascript"></script>
+  <script src="../lib/unittest.js" type="text/javascript"></script>
+  <link rel="stylesheet" href="../test.css" type="text/css" />
+  <style type="text/css" media="screen">
+  /* <![CDATA[ */
+    #testcss1 { font-size:11px; color: #f00; }
+    #testcss2 { font-size:12px; color: #0f0; display: none; }
+  /* ]]> */
+  </style>
+</head>
+<body>
+<h1>Prototype Unit test file</h1>
+<p>
+  Test of utility functions in base.js
+</p>
+
+<!-- Log output -->
+<div id="testlog"> </div>
+
+<!-- Tests follow -->
+<script type="text/javascript" language="javascript" charset="utf-8">
+// <![CDATA[
+
+
+  var peEventCount = 0;
+  // peEventFired will stop the PeriodicalExecuter after 3 callbacks
+  function peEventFired(pe) {
+    if (++peEventCount>2) {
+      pe.stop();
+    }
+  }
+  
+  var arg1 = 1;
+  var arg2 = 2;
+  var arg3 = 3;
+  function TestObj(){}
+  TestObj.prototype.assertingEventHandler = 
+    function( event, assertEvent, assert1, assert2, assert3, a1, a2, a3 ){
+      assertEvent(event);
+      assert1(a1);
+      assert2(a2);
+      assert3(a3);
+    }
+    
+  var globalBindTest = null;
+
+  new Test.Unit.Runner({
+    
+    testFunctionBind: function() { with(this) {
+      function methodWithoutArguments(){
+        globalBindTest = this.hi;
+      }
+      function methodWithArguments(){
+        globalBindTest = this.hi + ',' + $A(arguments).join(',');
+      }
+      function methodWithBindArguments(){
+        globalBindTest = this.hi + ',' + $A(arguments).join(',');
+      }
+      function methodWithBindArgumentsAndArguments(){
+        globalBindTest = this.hi + ',' + $A(arguments).join(',');
+      }
+      
+      methodWithoutArguments.bind({hi:'without'})();
+      assertEqual('without', globalBindTest);
+      
+      methodWithArguments.bind({hi:'with'})('arg1','arg2');
+      assertEqual('with,arg1,arg2', globalBindTest);
+      
+      methodWithBindArguments.bind({hi:'withBindArgs'},'arg1','arg2')();
+      assertEqual('withBindArgs,arg1,arg2', globalBindTest);
+      
+      methodWithBindArgumentsAndArguments.bind({hi:'withBindArgsAndArgs'},'arg1','arg2')('arg3','arg4');
+      assertEqual('withBindArgsAndArgs,arg1,arg2,arg3,arg4', globalBindTest);
+    }},
+
+    testObjectInspect: function() { with(this) {
+      assertEqual('undefined', Object.inspect());
+      assertEqual('undefined', Object.inspect(undefined));
+      assertEqual('null', Object.inspect(null));
+      assertEqual("'foo\\\\b\\\'ar'", Object.inspect('foo\\b\'ar'));
+      assertEqual('[]', Object.inspect([]));
+    }},
+    
+    // sanity check
+    testDoesntExtendObjectPrototype: function() {with(this) {
+      // for-in is supported with objects
+      var iterations = 0, obj = { a: 1, b: 2, c: 3 };
+      for(property in obj) iterations++;
+      assertEqual(3, iterations);
+      
+      // for-in is not supported with arrays
+      iterations = 0;
+      var arr = [1,2,3];
+      for(property in arr) iterations++;
+      assert(iterations > 3);
+    }},
+    
+    testPeriodicalExecuterStop: function() {with(this) {
+      new PeriodicalExecuter(peEventFired, 0.1);
+      
+      wait(1000, function() {
+          assertEqual(3, peEventCount);
+      });
+    }},
+
+    testBindAsEventListener: function() {
+      for( var i = 0; i < 10; ++i ){
+        var div = document.createElement('div');
+        div.setAttribute('id','test-'+i);
+        document.body.appendChild(div);
+        var tobj = new TestObj();
+        var eventTest = {test:true};
+        var call = tobj.assertingEventHandler.bindAsEventListener(tobj,
+          this.assertEqual.bind(this,eventTest),
+          this.assertEqual.bind(this,arg1),
+          this.assertEqual.bind(this,arg2),
+          this.assertEqual.bind(this,arg3), arg1, arg2, arg3 );
+        call(eventTest);
+      }
+    }
+
+  }, 'testlog');
+
+// ]]>
+</script>
+</body>
+</html>
diff --git a/test/unit/dom.html b/test/unit/dom.html
new file mode 100644
index 0000000..5c73682
--- /dev/null
+++ b/test/unit/dom.html
@@ -0,0 +1,809 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+  <title>Prototype Unit test file</title>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8" />
+  <script src="../../dist/prototype.js" type="text/javascript"></script>
+  <script src="../lib/unittest.js" type="text/javascript"></script>
+  <link rel="stylesheet" href="../test.css" type="text/css" />
+  <style type="text/css" media="screen">
+  /* <![CDATA[ */
+    #testcss1 { font-size:11px; color: #f00; }
+    #testcss2 { font-size:12px; color: #0f0; display: none; }
+    #style_test_1 { cursor: pointer; font-size:12px;}
+    div.style-test { margin-left: 1px }
+    
+    #not_floating_style { float: none }
+    #floating_style { float: left }
+    #op2 { opacity:0.5;filter:alpha(opacity=50)progid:DXImageTransform.Microsoft.Blur(strength=10);}
+    
+    #scroll_test_1 { 
+      margin: 10px;
+      padding: 10px;
+      position: relative;
+    }
+    
+    #scroll_test_2 {
+      position: absolute;
+      left: 10px;
+      top: 10px;
+    }
+    
+    #dimensions-visible,
+    #dimensions-display-none,
+    #dimensions-visible-pos-rel,
+    #dimensions-display-none-pos-rel,
+    #dimensions-visible-pos-abs,
+    #dimensions-display-none-pos-abs {
+        font-size: 10px;
+        height: 10em;
+        width: 20em;
+    }
+    
+    #dimensions-visible-pos-abs,
+    #dimensions-display-none-pos-abs {
+      position: absolute;
+      top: 15px;
+      left: 15px;
+    }
+    
+    #dimensions-visible-pos-rel,
+    #dimensions-display-none-pos-rel {
+      position: relative;
+      top: 15px;
+      left: 15px;
+    }
+    
+    #dimensions-display-none, #imensions-display-none-pos-rel, #dimensions-display-none-pos-abs {
+        display: none;
+    }
+    
+    #dimensions-table, #dimensions-tbody, #dimensions-tr, #dimensions-td {
+        font-size: 10px;
+        margin: 0;
+        padding: 0;
+        border: 0;
+        border-spacing: 0;
+        height: 10em;
+        width: 20em;
+    }
+    
+    /* for scroll test on really big screens */
+    body {
+      height: 40000px;
+    }
+  /* ]]> */
+  </style>
+</head>
+<body>
+<h1>Prototype Unit test file</h1>
+<p>
+  Test of functions in dom.js
+</p>
+
+<!-- Log output -->
+<div id="scroll_test_1">
+  <p id="scroll_test_2">Scroll test</p>
+</div>
+
+<div id="testlog"> </div>
+
+<div id="test-visible">visible</div>
+<div id="test-hidden" style="display:none;">hidden</div>
+<div id="test-toggle-visible">visible</div>
+<div id="test-toggle-hidden" style="display:none;">hidden</div>
+<div id="test-hide-visible">visible</div>
+<div id="test-hide-hidden" style="display:none;">hidden</div>
+<div id="test-show-visible">visible</div>
+<div id="test-show-hidden" style="display:none;">hidden</div>
+<div id="removable-container"><div id="removable"></div></div>
+
+<div>
+  <table>
+    <tbody id="table">
+      <tr>
+        <td>Data</td>
+      </tr>
+      <tr>
+        <td id="a_cell">First Row</td>
+      </tr>
+      <tr id="second_row">
+        <td>Second Row</td>
+      </tr>
+    </tbody>
+  </table>
+</div>
+
+<div id="table-container-to-replace">
+  <table>
+    <tbody id="table-to-replace">
+      <tr>
+        <td>Data</td>
+      </tr>
+      <tr>
+        <td id="a_cell-to-replace">First Row</td>
+      </tr>
+      <tr id="second_row-to-replace">
+        <td>Second Row</td>
+      </tr>
+    </tbody>
+  </table>
+</div>
+
+<p class="test">Test paragraph outside of container</p>
+
+<div id="container">
+  <p class="test" id="intended">Test paragraph 1 inside of container</p>
+  <p class="test">Test paragraph 2 inside of container</p>
+  <p class="test">Test paragraph 3 inside of container</p>
+  <p class="test">Test paragraph 4 inside of container</p>
+</div>
+
+<div id="testdiv">to be updated</div>
+<div id="testdiv-replace-container-1"><div id="testdiv-replace-1"></div></div>
+<div id="testdiv-replace-container-2"><div id="testdiv-replace-2"></div></div>
+<div id="testdiv-replace-container-3"><div id="testdiv-replace-3"></div></div>
+<div id="testdiv-replace-container-4"><div id="testdiv-replace-4"></div></div>
+<div id="testdiv-replace-container-5"><div id="testdiv-replace-5"></div></div>
+
+<div id="element_with_visible_overflow" style="overflow:visible">V</div>
+<div id="element_with_hidden_overflow" style="overflow:hidden">H</div>
+<div id="element_with_scroll_overflow" style="overflow:scroll">S</div>
+
+<div id="element_extend_test"> </div>
+
+<div id="test_whitespace"> <span> </span>
+
+
+<div><div></div> </div><span> </span>
+</div>
+
+
+<div id="nav_tests_isolator">
+  <div id="nav_test_first_sibling"></div>
+  <div></div>
+  <p id="nav_test_p" class="test"></p>
+  <span id="nav_test_prev_sibling"></span>
+  
+  <ul id="navigation_test" style="display: none">
+    <li class="first"><em>A</em></li>
+    <li><em class="dim">B</em></li>
+    <li id="navigation_test_c">
+    <em>C</em>
+    <ul>
+      <li><em class="dim">E</em></li>
+      <li id="navigation_test_f"><em>F</em></li>
+    </ul>
+    </li>
+    <li class="last"><em>D</em></li>
+  </ul>
+  
+  <div id="navigation_test_next_sibling">
+    <!-- -->
+  </div>
+  
+  <p></p>
+</div>
+
+<div id="class_names">
+  <p class="A"></p>
+  <ul class="A B" id="class_names_ul">
+    <li class="C"></li>
+    <li class="A C"></li>
+  </ul>
+  <div class="B C D"></div>
+</div>
+
+<div id="style_test_1" style="display:none;"></div>
+<div id="style_test_2" class="style-test" style="font-size:11px;"></div>
+
+<div id="style_test_3">blah</div>
+
+
+
+<div id="custom_attributes">
+  <div foo="1" bar="2"></div>
+  <div foo="2"></div>
+</div>
+
+<a id="attributes_with_issues_1" href="test.html" accesskey="L" tabindex="50" title="a link"></a>
+<a id="attributes_with_issues_2" href="" accesskey="" tabindex="" title=""></a>
+<a id="attributes_with_issues_3"></a>
+
+<div id="dom_attribute_precedence">
+  <form>
+    <input type="submit" id="update" />
+  </form>
+</div>
+
+<div id="not_floating_none">NFN</div>
+<div id="not_floating_inline" style="float:none">NFI</div>
+<div id="not_floating_style">NFS</div>
+
+<div id="floating_inline" style="float:left">FI</div>
+<div id="floating_style">FS</div>
+<!-- Test Element opacity functions -->
+<img id="op1" alt="op2" src="fixtures/logo.gif" style="opacity:0.5;filter:alpha(opacity=50)" />
+<img id="op2" alt="op2" src="fixtures/logo.gif"/>
+<img id="op3" alt="op3" src="fixtures/logo.gif"/>
+<img id="op4-ie" alt="op3" src="fixtures/logo.gif" style="filter:alpha(opacity=30)" />
+<div id="dimensions-visible"></div>
+<div id="dimensions-display-none"></div>
+<div id="dimensions-visible-pos-rel"></div>
+<div id="dimensions-display-none-pos-rel"></div>
+<div id="dimensions-visible-pos-abs"></div>
+<div id="dimensions-display-none-pos-abs"></div>
+<table border="0" cellspacing="0" cellpadding="0" id="dimensions-table">
+  <tbody id="dimensions-tbody">
+    <tr id="dimensions-tr">
+      <td id="dimensions-td">Data</td>
+    </tr>
+  </tbody>
+</table>
+
+<p id="test-empty"></p>
+<p id="test-empty-but-contains-whitespace">  
+   
+    
+</p>
+<p id="test-full">content</p>
+<div id="ancestor"><div id="child"><div><div id="great-grand-child"></div></div></div></div>
+<div id="not-in-the-family"></div>
+<!-- Tests follow -->
+<script type="text/javascript" language="javascript" charset="utf-8">
+// <![CDATA[
+
+  var testVar = 'to be updated';
+
+  new Test.Unit.Runner({
+
+    testDollarFunction: function() { with(this) {
+      assertUndefined($());
+      
+      assertNull(document.getElementById('noWayThisIDExists'));
+      assertNull($('noWayThisIDExists'));
+      
+      assertIdentical(document.getElementById('testdiv'), $('testdiv'));
+      assertEnumEqual([ $('testdiv'), $('container') ], $('testdiv', 'container'));
+      assertEnumEqual([ $('testdiv'), undefined, $('container') ],
+        $('testdiv', 'noWayThisIDExists', 'container'));
+      var elt = $('testdiv');
+      assertIdentical(elt, $(elt));
+      assertRespondsTo('hide', elt);
+    }},
+    
+    testGetElementsByClassName: function() {with(this) {
+      assertElementsMatch(document.getElementsByClassName('A'), 'p.A', 'ul#class_names_ul.A', 'li.A.C');
+      assertElementsMatch(document.getElementsByClassName('A', 'class_names_ul'), 'li.A.C');
+      assertElementsMatch(document.getElementsByClassName('B', 'class_names'), 'ul#class_names_ul.A.B', 'div.B.C.D');
+      assertElementsMatch(document.getElementsByClassName('B', 'class_names_ul'));
+    }},
+    
+    testInsertWithTR: function() {with(this) {
+      new Insertion.After('second_row', '<tr id="third_row"><td>Third Row</td></tr>');
+      assert($('second_row').childOf('table'));
+    }},
+    
+    testElementVisible: function(){with(this) {
+        assertNotEqual('none', $('test-visible').style.display);
+        assertEqual('none', $('test-hidden').style.display);
+    }},
+    
+    testElementToggle: function(){with(this) {
+        $('test-toggle-visible').toggle();
+        assert(!$('test-toggle-visible').visible());
+        $('test-toggle-visible').toggle();
+        assert($('test-toggle-visible').visible());
+        $('test-toggle-hidden').toggle();
+        assert($('test-toggle-hidden').visible());
+        $('test-toggle-hidden').toggle();
+        assert(!$('test-toggle-hidden').visible());
+    }},
+    
+    testElementShow: function(){with(this) {
+        $('test-show-visible').show();
+        assert($('test-show-visible').visible());
+        $('test-show-hidden').show();
+        assert($('test-show-hidden').visible());
+    }},
+    
+    testElementHide: function(){with(this) {
+        $('test-hide-visible').hide();
+        assert(!$('test-hide-visible').visible());
+        $('test-hide-hidden').hide();
+        assert(!$('test-hide-hidden').visible());
+    }}, 
+    
+    testElementRemove: function(){with(this) {
+        $('removable').remove();
+        assert($('removable-container').empty());
+    }},  
+     
+    testElementUpdate: function() {with(this) {
+      $('testdiv').update('hello from div!');
+      assertEqual('hello from div!', $('testdiv').innerHTML);
+      
+      Element.update('testdiv', 'another hello from div!');
+      assertEqual('another hello from div!', $('testdiv').innerHTML);
+      
+      Element.update('testdiv', 123);
+      assertEqual('123', $('testdiv').innerHTML)
+      
+      Element.update('testdiv');
+      assertEqual('', $('testdiv').innerHTML)
+    }},
+
+    testElementUpdateWithScript: function() {with(this) {
+      $('testdiv').update('hello from div!<script>testVar="hello!"</'+'script>');
+      assertEqual('hello from div!',$('testdiv').innerHTML);
+      wait(100,function(){
+        assertEqual('hello!',testVar);
+        
+        Element.update('testdiv','another hello from div!\n<script>testVar="another hello!"</'+'script>\nhere it goes');
+        
+        // note: IE normalizes whitespace (like line breaks) to single spaces, thus the match test
+        assertMatch(/^another hello from div!\s+here it goes$/,$('testdiv').innerHTML);
+        wait(100,function(){
+          assertEqual('another hello!',testVar);
+        });
+      });
+    }},
+    
+    testElementUpdateInTableRow: function() {with(this) {
+      $('second_row').update('<td id="i_am_a_td">test</td>');
+      assertEqual('test',$('i_am_a_td').innerHTML);
+
+      Element.update('second_row','<td id="i_am_a_td">another <span>test</span></td>');
+      assertEqual('another <span>test</span>',$('i_am_a_td').innerHTML.toLowerCase());
+    }},
+    
+    testElementUpdateInTableCell: function() {with(this) {
+      Element.update('a_cell','another <span>test</span>');
+      assertEqual('another <span>test</span>',$('a_cell').innerHTML.toLowerCase());
+    }},
+    
+    testElementUpdateInTable: function() {with(this) {
+      Element.update('table','<tr><td>boo!</td></tr>');
+      assertMatch(/^<tr>\s*<td>boo!<\/td><\/tr>$/,$('table').innerHTML.toLowerCase());
+    }},
+    
+    testElementReplace: function() {with(this) {
+      $('testdiv-replace-1').replace('hello from div!');
+      assertEqual('hello from div!', $('testdiv-replace-container-1').innerHTML);
+      
+      $('testdiv-replace-2').replace(123);
+      assertEqual('123', $('testdiv-replace-container-2').innerHTML)
+      
+      $('testdiv-replace-3').replace();
+      assertEqual('', $('testdiv-replace-container-3').innerHTML)
+    }},
+    
+
+    testElementReplaceWithScript: function() {with(this) {
+      $('testdiv-replace-4').replace('hello from div!<script>testVarReplace="hello!"</'+'script>');
+      assertEqual('hello from div!', $('testdiv-replace-container-4').innerHTML);
+      wait(100,function(){
+        assertEqual('hello!',testVarReplace);
+        
+        $('testdiv-replace-5').replace('another hello from div!\n<script>testVarReplace="another hello!"</'+'script>\nhere it goes');
+        
+        // note: IE normalizes whitespace (like line breaks) to single spaces, thus the match test
+        assertMatch(/^another hello from div!\s+here it goes$/,$('testdiv-replace-container-5').innerHTML);
+        wait(100,function(){
+          assertEqual('another hello!',testVarReplace);
+        });
+      });
+    }},
+    
+    testElementSelectorMethod: function() {with(this) {
+      var testSelector = $('container').getElementsBySelector('p.test');
+      assertEqual(testSelector.length, 4);
+      assertEqual(testSelector[0], $('intended'));
+      assertEqual(testSelector[0], $$('#container p.test')[0]);
+    }},
+       
+    testElementClassNameMethod: function() {with(this) {
+      var testClassNames = $('container').getElementsByClassName('test');
+      var testSelector = $('container').getElementsBySelector('p.test');
+      assertEqual(testClassNames[0], $('intended'));
+      assertEqual(testClassNames.length, 4);
+      assertEqual(testSelector[3], testClassNames[3]);
+      assertEqual(testClassNames.length, testSelector.length);
+    }},
+    
+    testElementAncestors: function() {with(this) {
+      var ancestors = $('navigation_test_f').ancestors();
+      assertElementsMatch(ancestors, 'ul', 'li', 'ul#navigation_test',
+        'div#nav_tests_isolator', 'body', 'html');
+      assertElementsMatch(ancestors.last().ancestors());
+    }},
+    
+    testElementDescendants: function() {with(this) {
+      assertElementsMatch($('navigation_test').descendants(), 
+        'li', 'em', 'li', 'em.dim', 'li', 'em', 'ul', 'li',
+        'em.dim', 'li#navigation_test_f', 'em', 'li', 'em');
+      assertElementsMatch($('navigation_test_f').descendants(), 'em');
+    }},
+    
+    testElementImmediateDescendants: function() {with(this) {
+      assertElementsMatch($('navigation_test').immediateDescendants(),
+        'li.first', 'li', 'li#navigation_test_c', 'li.last');
+      assertNotEqual(0, $('navigation_test_next_sibling').childNodes.length);
+      assertEnumEqual([], $('navigation_test_next_sibling').immediateDescendants());
+    }},
+        
+    testElementPreviousSiblings: function() {with(this) {
+      assertElementsMatch($('navigation_test').previousSiblings(),
+        'span#nav_test_prev_sibling', 'p.test', 'div', 'div#nav_test_first_sibling');
+      assertElementsMatch($('navigation_test_f').previousSiblings(), 'li');
+    }},
+    
+    testElementNextSiblings: function() {with(this) {
+      assertElementsMatch($('navigation_test').nextSiblings(),
+        'div#navigation_test_next_sibling', 'p');
+      assertElementsMatch($('navigation_test_f').nextSiblings());
+    }},
+    
+    testElementSiblings: function() {with(this) {
+      assertElementsMatch($('navigation_test').siblings(),
+        'div#nav_test_first_sibling', 'div', 'p.test',
+        'span#nav_test_prev_sibling', 'div#navigation_test_next_sibling', 'p');
+    }},
+    
+    testElementUp: function() {with(this) {
+      var element = $('navigation_test_f');
+      assertElementMatches(element.up(), 'ul');
+      assertElementMatches(element.up(0), 'ul');
+      assertElementMatches(element.up(1), 'li');
+      assertElementMatches(element.up(2), 'ul#navigation_test');
+      assertElementsMatch(element.up('li').siblings(), 'li.first', 'li', 'li.last');
+      assertElementMatches(element.up('ul', 1), 'ul#navigation_test');
+      assertEqual(undefined, element.up('garbage'));
+      assertEqual(undefined, element.up(6));
+    }},
+    
+    testElementDown: function() {with(this) {
+      var element = $('navigation_test');
+      assertElementMatches(element.down(), 'li.first');
+      assertElementMatches(element.down(0), 'li.first');
+      assertElementMatches(element.down(1), 'em');
+      assertElementMatches(element.down('li', 5), 'li.last');
+      assertElementMatches(element.down('ul').down('li', 1), 'li#navigation_test_f');
+    }},
+    
+    testElementPrevious: function() {with(this) {
+      var element = $('navigation_test').down('li.last');
+      assertElementMatches(element.previous(), 'li#navigation_test_c');
+      assertElementMatches(element.previous(1), 'li');
+      assertElementMatches(element.previous('.first'), 'li.first');
+      assertEqual(undefined, element.previous(3));
+      assertEqual(undefined, $('navigation_test').down().previous());
+    }},
+    
+    testElementNext: function() {with(this) {
+      var element = $('navigation_test').down('li.first');
+      assertElementMatches(element.next(), 'li');
+      assertElementMatches(element.next(1), 'li#navigation_test_c');
+      assertElementMatches(element.next(2), 'li.last');
+      assertElementMatches(element.next('.last'), 'li.last');
+      assertEqual(undefined, element.next(3));
+      assertEqual(undefined, element.next(2).next());
+    }},
+    
+    testElementInspect: function() {with(this) {
+      assertEqual('<ul id="navigation_test">', $('navigation_test').inspect());
+      assertEqual('<li class="first">', $('navigation_test').down().inspect());
+      assertEqual('<em>', $('navigation_test').down(1).inspect());
+    }},
+    
+    testElementMakeClipping: function() {with(this) {
+      var chained = Element.extend(document.createElement('DIV'));
+      assertEqual(chained, chained.makeClipping());
+      assertEqual(chained, chained.makeClipping());
+      assertEqual(chained, chained.makeClipping().makeClipping());
+      
+      assertEqual(chained, chained.undoClipping());
+      assertEqual(chained, chained.undoClipping());
+      assertEqual(chained, chained.undoClipping().makeClipping());
+      
+      ['hidden','visible','scroll'].each( function(overflowValue) {
+        var element = $('element_with_'+overflowValue+'_overflow');
+        
+        assertEqual(overflowValue, element.getStyle('overflow'));
+        element.makeClipping();
+        assertEqual('hidden', element.getStyle('overflow'));
+        element.undoClipping();
+        assertEqual(overflowValue, element.getStyle('overflow'));
+      });
+    }},
+    
+    testElementExtend: function() {with(this) {
+      var element = $('element_extend_test');
+      assertRespondsTo('show', element);
+      
+      var XHTML_TAGS = $w(
+        'a abbr acronym address applet area '+
+        'b bdo big blockquote br button caption '+
+        'cite code col colgroup dd del dfn div dl dt '+
+        'em fieldset form h1 h2 h3 h4 h5 h6 hr '+
+        'i iframe img input ins kbd label legend li '+
+        'map object ol optgroup option p param pre q samp '+
+        'script select small span strong style sub sup '+
+        'table tbody td textarea tfoot th thead tr tt ul var');
+        
+      XHTML_TAGS.each(function(tag) {
+        var element = document.createElement(tag);
+        assertEqual(element, Element.extend(element));
+        assertRespondsTo('show', element);
+      });
+      
+      [null,'','a','aa'].each(function(content) {
+        var textnode = document.createTextNode(content);
+        assertEqual(textnode, Element.extend(textnode));
+        assert(typeof textnode['show'] == 'undefined');
+      });
+    }},
+    
+    testElementCleanWhitespace: function() {with(this) {
+      Element.cleanWhitespace("test_whitespace");
+      assertEqual(3, $("test_whitespace").childNodes.length);
+      
+      assertEqual(1, $("test_whitespace").firstChild.nodeType);
+      assertEqual('SPAN', $("test_whitespace").firstChild.tagName);
+      
+      assertEqual(1, $("test_whitespace").firstChild.nextSibling.nodeType);
+      assertEqual('DIV', $("test_whitespace").firstChild.nextSibling.tagName);
+      
+      assertEqual(1, $("test_whitespace").firstChild.nextSibling.nextSibling.nodeType);
+      assertEqual('SPAN', $("test_whitespace").firstChild.nextSibling.nextSibling.tagName);
+      
+      var element = document.createElement('DIV');
+      element.appendChild(document.createTextNode(''));
+      element.appendChild(document.createTextNode(''));
+      assertEqual(2, element.childNodes.length);
+      Element.cleanWhitespace(element);
+      assertEqual(0, element.childNodes.length);
+    }},
+    
+    testElementEmpty: function() {with(this) {
+      assert($('test-empty').empty());
+      assert($('test-empty-but-contains-whitespace').empty());
+      assert(!$('test-full').empty());
+    }},
+
+    testDescendantOf: function() {with(this) {
+      assert($('child').descendantOf('ancestor'));
+      assert($('child').descendantOf($('ancestor')));
+      assert($('great-grand-child').descendantOf('ancestor'));
+      assert(!$('great-grand-child').descendantOf('not-in-the-family'));
+    }},  
+    
+    testChildOf: function() {with(this) {
+      assert($('child').childOf('ancestor'));
+      assert($('child').childOf($('ancestor')));
+      assert($('great-grand-child').childOf('ancestor'));
+      assert(!$('great-grand-child').childOf('not-in-the-family'));
+      assertIdentical(Element.Methods.childOf, Element.Methods.descendantOf);
+    }},    
+    
+    testElementSetStyle: function() { with(this) {
+      Element.setStyle('style_test_3',{ 'left': '2px' });
+      assertEqual('2px', $('style_test_3').style.left);
+      
+      Element.setStyle('style_test_3',{ marginTop: '1px' });
+      assertEqual('1px', $('style_test_3').style.marginTop);
+      
+      $('style_test_3').setStyle({ 'margin-top': '2px', left: '-1px' });
+      assertEqual('-1px', $('style_test_3').style.left);
+      assertEqual('2px', $('style_test_3').style.marginTop);
+      
+      assertEqual('none', $('style_test_3').getStyle('float'));
+      $('style_test_3').setStyle({ 'float': 'left' });
+      assertEqual('left', $('style_test_3').getStyle('float'));
+      
+      $('style_test_3').setStyle({ cssFloat: 'none' });
+      assertEqual('none', $('style_test_3').getStyle('float'));
+      
+      assertEqual(1, $('style_test_3').getStyle('opacity'));
+      
+      $('style_test_3').setStyle({ opacity: 0.5 });
+      assertEqual(0.5, $('style_test_3').getStyle('opacity'));
+      
+      // should remove opacity
+      $('style_test_3').setStyle({ opacity: '' });
+      assertEqual(1, $('style_test_3').getStyle('opacity'));
+    }},
+    
+    testElementGetStyle: function() { with(this) {
+      assertEqual("none",
+        $('style_test_1').getStyle('display'));
+      
+      // not displayed, so "null" ("auto" is tranlated to "null")
+      assertNull(Element.getStyle('style_test_1','width'));
+      
+      $('style_test_1').show();
+      
+      // from id rule
+      assertEqual("pointer",
+        Element.getStyle('style_test_1','cursor'));
+      
+      assertEqual("block",
+        Element.getStyle('style_test_2','display'));
+      
+      // we should always get something for width (if displayed)
+      // firefox and safari automatically send the correct value,
+      // IE is special-cased to do the same
+      assertEqual($('style_test_2').offsetWidth+'px', Element.getStyle('style_test_2','width'));
+      
+      assertEqual("static",Element.getStyle('style_test_1','position'));
+      // from style
+      assertEqual("11px",
+        Element.getStyle('style_test_2','font-size'));
+      // from class
+      assertEqual("1px",
+        Element.getStyle('style_test_2','margin-left'));
+      
+      ['not_floating_none','not_floating_style','not_floating_inline'].each(function(element){
+        assertEqual('none', $(element).getStyle('float'));
+        assertEqual('none', $(element).getStyle('cssFloat'));
+      });
+      
+      ['floating_style','floating_inline'].each(function(element){
+        assertEqual('left', $(element).getStyle('float'));
+        assertEqual('left', $(element).getStyle('cssFloat'));
+      });
+
+      assertEqual(0.5, $('op1').getStyle('opacity'));
+      assertEqual(0.5, $('op2').getStyle('opacity'));
+      assertEqual(1.0, $('op3').getStyle('opacity'));
+      
+      $('op1').setStyle({opacity: '0.3'});
+      $('op2').setStyle({opacity: '0.3'});
+      $('op3').setStyle({opacity: '0.3'});
+      
+      assertEqual(0.3, $('op1').getStyle('opacity'));
+      assertEqual(0.3, $('op2').getStyle('opacity'));
+      assertEqual(0.3, $('op3').getStyle('opacity'));
+      
+      if(navigator.appVersion.match(/MSIE/)) {
+        assertEqual('alpha(opacity=30)', $('op1').getStyle('filter'));
+        assertEqual('progid:DXImageTransform.Microsoft.Blur(strength=10)alpha(opacity=30)', $('op2').getStyle('filter'));
+        assertEqual('alpha(opacity=30)', $('op3').getStyle('filter'));
+        assertEqual(0.3, $('op4-ie').getStyle('opacity'));
+      }
+      // verify that value is stil found when using camelized
+      // strings (function previously used getPropertyValue()
+      // which expected non-camelized strings)
+      assertEqual("12px", $('style_test_1').getStyle('fontSize'));
+    }},
+    
+    testElementReadAttribute: function() {with(this) {
+      assertEqual('test.html' , $('attributes_with_issues_1').readAttribute('href'));
+      assertEqual('L' , $('attributes_with_issues_1').readAttribute('accesskey'));
+      assertEqual('50' , $('attributes_with_issues_1').readAttribute('tabindex'));
+      assertEqual('a link' , $('attributes_with_issues_1').readAttribute('title'));
+
+      ['href', 'accesskey', 'accesskey', 'title'].each(function(attr){
+          assertEqual('' , $('attributes_with_issues_2').readAttribute(attr));
+      });
+    
+      var elements = $('custom_attributes').immediateDescendants();
+      assertEnumEqual(['1', '2'], elements.invoke('readAttribute', 'foo'));
+      assertEnumEqual(['2', null], elements.invoke('readAttribute', 'bar'));
+    }},
+    
+    testElementGetHeight: function() {with(this) {
+        assertIdentical(100, $('dimensions-visible').getHeight());
+        assertIdentical(100, $('dimensions-display-none').getHeight());
+    }},
+    
+    testElementGetWidth: function() {with(this) {
+        assertIdentical(200, $('dimensions-visible').getWidth());
+        assertIdentical(200, $('dimensions-display-none').getWidth());
+    }},
+    
+    testElementGetDimensions: function() {with(this) {
+        assertIdentical(100, $('dimensions-visible').getDimensions().height);
+        assertIdentical(200, $('dimensions-visible').getDimensions().width);
+        assertIdentical(100, $('dimensions-display-none').getDimensions().height);
+        assertIdentical(200, $('dimensions-display-none').getDimensions().width);
+        
+        assertIdentical(100, $('dimensions-visible-pos-rel').getDimensions().height);
+        assertIdentical(200, $('dimensions-visible-pos-rel').getDimensions().width);
+        assertIdentical(100, $('dimensions-display-none-pos-rel').getDimensions().height);
+        assertIdentical(200, $('dimensions-display-none-pos-rel').getDimensions().width);
+        
+        assertIdentical(100, $('dimensions-visible-pos-abs').getDimensions().height);
+        assertIdentical(200, $('dimensions-visible-pos-abs').getDimensions().width);
+        assertIdentical(100, $('dimensions-display-none-pos-abs').getDimensions().height);
+        assertIdentical(200, $('dimensions-display-none-pos-abs').getDimensions().width);
+        
+        $('dimensions-td').hide();
+        assertIdentical(100, $('dimensions-td').getDimensions().height);
+        assertIdentical(200, $('dimensions-td').getDimensions().width);
+        $('dimensions-td').show();
+        
+        $('dimensions-tr').hide();
+        assertIdentical(100, $('dimensions-tr').getDimensions().height);
+        assertIdentical(200, $('dimensions-tr').getDimensions().width);
+        $('dimensions-tr').show();
+        
+        $('dimensions-table').hide();
+        assertIdentical(100, $('dimensions-table').getDimensions().height);
+        assertIdentical(200, $('dimensions-table').getDimensions().width);
+    }},
+        
+    testDOMAttributesHavePrecedenceOverExtendedElementMethods: function() {with(this) {
+      assertNothingRaised(function() { $('dom_attribute_precedence').down('form') });
+      assertEqual($('dom_attribute_precedence').down('input'), $('dom_attribute_precedence').down('form').update);
+    }},
+    
+    testClassNames: function() {with(this) {
+      assertEnumEqual([], $('class_names').classNames());
+      assertEnumEqual(['A'], $('class_names').down().classNames());
+      assertEnumEqual(['A', 'B'], $('class_names_ul').classNames());
+    }},
+    
+    testHasClassName: function() {with(this) {
+      assert(!$('class_names').hasClassName('does_not_exist'));
+      assert($('class_names').down().hasClassName('A'));
+      assert(!$('class_names').down().hasClassName('does_not_exist'));
+      assert($('class_names_ul').hasClassName('A'));
+      assert($('class_names_ul').hasClassName('B'));
+      assert(!$('class_names_ul').hasClassName('does_not_exist'));
+    }},
+    
+    testAddClassName: function() {with(this) {
+      $('class_names').addClassName('added_className');
+      assertEnumEqual(['added_className'], $('class_names').classNames());
+      
+      $('class_names').addClassName('added_className'); // verify that className cannot be added twice.
+      assertEnumEqual(['added_className'], $('class_names').classNames());
+      
+      $('class_names').addClassName('another_added_className');
+      assertEnumEqual(['added_className', 'another_added_className'], $('class_names').classNames());
+    }},
+    
+    testRemoveClassName: function() {with(this) {
+      $('class_names').removeClassName('added_className');
+      assertEnumEqual(['another_added_className'], $('class_names').classNames());
+      
+      $('class_names').removeClassName('added_className'); // verify that removing a non existent className is safe.
+      assertEnumEqual(['another_added_className'], $('class_names').classNames());
+      
+      $('class_names').removeClassName('another_added_className');
+      assertEnumEqual([], $('class_names').classNames());
+    }},
+    
+    testToggleClassName: function() {with(this) {
+      $('class_names').toggleClassName('toggled_className');
+      assertEnumEqual(['toggled_className'], $('class_names').classNames());
+      
+      $('class_names').toggleClassName('toggled_className');
+      assertEnumEqual([], $('class_names').classNames());
+      
+      $('class_names_ul').toggleClassName('toggled_className');
+      assertEnumEqual(['A', 'B', 'toggled_className'], $('class_names_ul').classNames());
+             
+      $('class_names_ul').toggleClassName('toggled_className');
+      assertEnumEqual(['A', 'B'], $('class_names_ul').classNames());  
+    }},
+    
+    testElementScrollTo: function() {with(this) {
+      var elem = $('scroll_test_2');
+      Element.scrollTo('scroll_test_2');
+      assertEqual(Position.page(elem)[1], 0);
+      window.scrollTo(0, 0);
+      
+      elem.scrollTo();
+      assertEqual(Position.page(elem)[1], 0);      
+      window.scrollTo(0, 0);
+    }}
+    
+  }, 'testlog');
+
+// ]]>
+</script>
+</body>
+</html>
diff --git a/test/unit/element_mixins.html b/test/unit/element_mixins.html
new file mode 100644
index 0000000..afb3591
--- /dev/null
+++ b/test/unit/element_mixins.html
@@ -0,0 +1,65 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+  <title>Prototype Unit test file</title>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8" />
+  <script src="../../dist/prototype.js" type="text/javascript"></script>
+  <script src="../lib/unittest.js" type="text/javascript"></script>
+  <link rel="stylesheet" href="../test.css" type="text/css" />
+  <style type="text/css" media="screen">
+  /* <![CDATA[ */
+    #testcss1 { font-size:11px; color: #f00; }
+    #testcss2 { font-size:12px; color: #0f0; display: none; }
+  /* ]]> */
+  </style>
+</head>
+<body>
+<h1>Prototype Unit test file</h1>
+<p>
+  Test of extra methods mixed in to elements with $() and $$().
+</p>
+
+<!-- Log output -->
+<div id="testlog"> </div>
+
+<h2>Test Form Elements</h2>
+<form id="form">
+  <input type="text" id="input" value="4" />
+  <input type="submit" />
+</form>
+
+<!-- Tests follow -->
+<script type="text/javascript" language="javascript" charset="utf-8">
+// <![CDATA[
+  new Test.Unit.Runner({
+    testInput: function() {with(this) {
+      assert($("input").present != null);
+      assert(typeof $("input").present == 'function');
+      assert($("input").select != null);
+    }},
+    
+    testForm: function() {with(this) {
+      assert($("form").reset != null);
+      assert($("form").getInputs().length == 2);
+    }},
+    
+    testEvent: function() {with(this) {
+      assert($("form").observe != null)
+      // Can't really test this one with TestUnit...
+      $('form').observe("submit", function(e) { 
+        alert("yeah!"); 
+        Event.stop(e); 
+      });
+    }},
+    
+    testCollections: function() {with(this) {
+      assert($$("input").all(function(input) {
+        return (input.focus != null);
+      }));
+    }}
+  }, 'testlog');
+// ]]>
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/test/unit/enumerable.html b/test/unit/enumerable.html
new file mode 100644
index 0000000..8b36b29
--- /dev/null
+++ b/test/unit/enumerable.html
@@ -0,0 +1,289 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+  <title>Prototype Unit test file</title>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8" />
+  <script src="../../dist/prototype.js" type="text/javascript"></script>
+  <script src="../lib/unittest.js" type="text/javascript"></script>
+  <link rel="stylesheet" href="../test.css" type="text/css" />
+  <style type="text/css" media="screen">
+  /* <![CDATA[ */
+    #testcss1 { font-size:11px; color: #f00; }
+    #testcss2 { font-size:12px; color: #0f0; display: none; }
+  /* ]]> */
+  </style>
+</head>
+<body>
+<h1>Prototype Unit test file</h1>
+<p>
+  Test of utility functions in enumerable.js
+</p>
+
+<!-- Log output -->
+<div id="testlog"> </div>
+
+<!-- Tests follow -->
+<script type="text/javascript" language="javascript" charset="utf-8">
+// <![CDATA[
+  var Fixtures = {
+    People: [
+      {name: 'Sam Stephenson',    nickname: 'sam-'},
+      {name: 'Marcel Molina Jr.', nickname: 'noradio'},
+      {name: 'Scott Barron',      nickname: 'htonl'},
+      {name: 'Nicholas Seckar',   nickname: 'Ulysses'}
+    ],
+    
+    Nicknames: $w('sam- noradio htonl Ulysses'),
+    
+    Primes: [
+       1,  2,  3,  5,  7,  11, 13, 17, 19, 23,
+      29, 31, 37, 41, 43,  47, 53, 59, 61, 67,
+      71, 73, 79, 83, 89,  97
+    ],
+    
+    Z: []
+  };
+  
+  for (var i = 1; i <= 100; i++) 
+    Fixtures.Z.push(i);    
+
+  function prime(value) {
+    for (var i = 2; i < value; i++)
+      if (value % i == 0) return false;
+    return true;
+  }
+
+  new Test.Unit.Runner({    
+    testEachBreak: function() {with(this) {
+      var result = 0;
+      [1, 2, 3].each(function(value) {
+        if ((result = value) == 2) throw $break;
+      });
+      
+      assertEqual(2, result);
+    }},
+    
+    testEachContinue: function() {with(this) {
+      var results = [];
+      [1, 2, 3].each(function(value) {
+        if (value == 2) throw $continue;
+        results.push(value);
+      });
+      
+      assertEqual('1, 3', results.join(', '));
+    }},
+    
+    testEachChaining: function() {with(this) {
+      assertEqual(Fixtures.Primes, Fixtures.Primes.each(Prototype.emptyFunction));
+      assertEqual(3, [1, 2, 3].each(Prototype.emptyFunction).length);
+    }},
+
+    testAny: function() {with(this) {
+      assert(!([].any()));
+      
+      assert([true, true, true].any());
+      assert([true, false, false].any());
+      assert(![false, false, false].any());
+      
+      assert([1, 2, 3, 4, 5].any(function(value) {
+        return value > 3;
+      }));
+      assert(![1, 2, 3, 4, 5].any(function(value) {
+        return value > 10;
+      }));
+    }},
+    
+    testAll: function() {with(this) {
+      assert([].all());
+      
+      assert([true, true, true].all());
+      assert(![true, false, false].all());
+      assert(![false, false, false].all());
+
+      assert([1, 2, 3, 4, 5].all(function(value) {
+        return value > 0;
+      }));
+      assert(![1, 2, 3, 4, 5].all(function(value) {
+        return value > 3;
+      }));
+    }},
+    
+    testCollect: function() {with(this) {
+      assertEqual(Fixtures.Nicknames.join(', '), 
+        Fixtures.People.collect(function(person) {
+          return person.nickname;
+        }).join(", "));
+      
+      assertEqual(26,  Fixtures.Primes.map().length);
+    }},
+    
+    testDetect: function() {with(this) {
+      assertEqual('Marcel Molina Jr.', 
+        Fixtures.People.detect(function(person) {
+          return person.nickname.match(/no/);
+        }).name);
+    }},
+    
+    testEachSlice: function() {with(this) {
+      assertEnumEqual([], [].eachSlice(2));
+      assertEqual(1, [1].eachSlice(1).length);
+      assertEnumEqual([1], [1].eachSlice(1)[0]);
+      assertEqual(2, [1,2,3].eachSlice(2).length);
+      assertEnumEqual(
+        [3, 2, 1, 11, 7, 5, 19, 17, 13, 31, 29, 23, 43, 41, 37, 59, 53, 47, 71, 67, 61, 83, 79, 73, 97, 89],
+        Fixtures.Primes.eachSlice( 3, function(slice){ return slice.reverse() }).flatten()
+      );
+    }},
+    
+    testEachWithIndex: function() {with(this) {
+      var nicknames = [], indexes = [];
+      Fixtures.People.each(function(person, index) {
+        nicknames.push(person.nickname);
+        indexes.push(index);
+      });
+      
+      assertEqual(Fixtures.Nicknames.join(', '), 
+        nicknames.join(', '));
+      assertEqual('0, 1, 2, 3', indexes.join(', '));
+    }},
+    
+    testFindAll: function() {with(this) {
+      assertEqual(Fixtures.Primes.join(', '),
+        Fixtures.Z.findAll(prime).join(', '));
+    }},
+    
+    testGrep: function() {with(this) {
+      assertEqual('noradio, htonl', 
+        Fixtures.Nicknames.grep(/o/).join(", "));
+        
+      assertEqual('NORADIO, HTONL', 
+        Fixtures.Nicknames.grep(/o/, function(nickname) {
+          return nickname.toUpperCase();
+        }).join(", "))
+    }},
+    
+    testInclude: function() {with(this) {
+      assert(Fixtures.Nicknames.include('sam-'));
+      assert(Fixtures.Nicknames.include('noradio'));
+      assert(Fixtures.Nicknames.include('htonl'));
+      assert(Fixtures.Nicknames.include('Ulysses'));
+      assert(!Fixtures.Nicknames.include('gmosx'));
+    }},
+    
+    testInGroupsOf: function() { with(this) {
+      assertEnumEqual([], [].inGroupsOf(3));
+      
+      var arr = [1, 2, 3, 4, 5, 6].inGroupsOf(3);
+      assertEqual(2, arr.length);
+      assertEnumEqual([1, 2, 3], arr[0]);
+      assertEnumEqual([4, 5, 6], arr[1]);
+      
+      arr = [1, 2, 3, 4, 5, 6].inGroupsOf(4);
+      assertEqual(2, arr.length);
+      assertEnumEqual([1, 2, 3, 4], arr[0]);
+      assertEnumEqual([5, 6, null, null], arr[1]);
+      
+      arr = [1, 2, 3].inGroupsOf(4,'x');
+      assertEqual(1, arr.length);
+      assertEnumEqual([1, 2, 3, 'x'], arr[0]);
+      
+      assertEnumEqual([1,2,3,'a'], [1,2,3].inGroupsOf(2, 'a').flatten());
+
+      arr = [1, 2, 3].inGroupsOf(5, '');
+      assertEqual(1, arr.length);
+      assertEnumEqual([1, 2, 3, '', ''], arr[0]);
+
+      assertEnumEqual([1,2,3,0], [1,2,3].inGroupsOf(2, 0).flatten());
+      assertEnumEqual([1,2,3,false], [1,2,3].inGroupsOf(2, false).flatten());
+    }},
+    
+    testInject: function() {with(this) {
+      assertEqual(1061, 
+        Fixtures.Primes.inject(0, function(sum, value) {
+          return sum + value;
+        }));
+    }},
+    
+    testInvoke: function() {with(this) {
+      var result = [[2, 1, 3], [6, 5, 4]].invoke('sort');
+      assertEqual(2, result.length);
+      assertEqual('1, 2, 3', result[0].join(', '));
+      assertEqual('4, 5, 6', result[1].join(', '));
+      
+      result = result.invoke('invoke', 'toString', 2);
+      assertEqual('1, 10, 11', result[0].join(', '));
+      assertEqual('100, 101, 110', result[1].join(', '));
+    }},
+    
+    testMax: function() {with(this) {
+      assertEqual(100, Fixtures.Z.max());
+      assertEqual(97, Fixtures.Primes.max());
+      assertEqual(2, [ -9, -8, -7, -6, -4, -3, -2,  0, -1,  2 ].max());
+      assertEqual('sam-', Fixtures.Nicknames.max()); // ?s > ?U
+    }},
+    
+    testMin: function() {with(this) {
+      assertEqual(1, Fixtures.Z.min());
+      assertEqual(0, [  1, 2, 3, 4, 5, 6, 7, 8, 0, 9 ].min());
+      assertEqual('Ulysses', Fixtures.Nicknames.min()); // ?U < ?h
+    }},
+    
+    testPartition: function() {with(this) {
+      var result = Fixtures.People.partition(function(person) {
+        return person.name.length < 15;
+      }).invoke('pluck', 'nickname');
+      
+      assertEqual(2, result.length);
+      assertEqual('sam-, htonl', result[0].join(', '));
+      assertEqual('noradio, Ulysses', result[1].join(', '));
+    }},
+    
+    testPluck: function() {with(this) {
+      assertEqual(Fixtures.Nicknames.join(', '),
+        Fixtures.People.pluck('nickname').join(', '));
+    }},
+    
+    testReject: function() {with(this) {
+      assertEqual(0, 
+        Fixtures.Nicknames.reject(Prototype.K).length);
+        
+      assertEqual('sam-, noradio, htonl',
+        Fixtures.Nicknames.reject(function(nickname) {
+          return nickname != nickname.toLowerCase();
+        }).join(', '));
+    }},
+    
+    testSortBy: function() {with(this) {
+      assertEqual('htonl, noradio, sam-, Ulysses',
+        Fixtures.People.sortBy(function(value) {
+          return value.nickname.toLowerCase();
+        }).pluck('nickname').join(', '));
+    }},
+    
+    testToArray: function() {with(this) {
+      var result = Fixtures.People.toArray();
+      assert(result != Fixtures.People); // they're different objects...
+      assertEqual(Fixtures.Nicknames.join(', '),
+        result.pluck('nickname').join(', ')); // but the values are the same
+    }},
+    
+    testZip: function() {with(this) {
+      var result = [1, 2, 3].zip([4, 5, 6], [7, 8, 9]);
+      assertEqual('[[1, 4, 7], [2, 5, 8], [3, 6, 9]]', result.inspect());
+      
+      result = [1, 2, 3].zip([4, 5, 6], [7, 8, 9], function(array) { return array.reverse() });
+      assertEqual('[[7, 4, 1], [8, 5, 2], [9, 6, 3]]', result.inspect());
+    }},
+    
+    testSize: function() {with(this) {
+      assertEqual(4, Fixtures.People.size());
+      assertEqual(4, Fixtures.Nicknames.size());
+      assertEqual(26, Fixtures.Primes.size());
+      assertEqual(0, [].size());
+    }}
+  }, 'testlog');
+// ]]>
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/test/unit/fixtures/content.html b/test/unit/fixtures/content.html
new file mode 100644
index 0000000..ee3701d
--- /dev/null
+++ b/test/unit/fixtures/content.html
@@ -0,0 +1 @@
+Pack my box with <em>five dozen</em> liquor jugs! Oh, how <strong>quickly</strong> daft jumping zebras vex...
\ No newline at end of file
diff --git a/test/unit/fixtures/hello.js b/test/unit/fixtures/hello.js
new file mode 100644
index 0000000..63d8111
--- /dev/null
+++ b/test/unit/fixtures/hello.js
@@ -0,0 +1 @@
+$("content").update("<H2>Hello world!</H2>");
diff --git a/test/unit/fixtures/logo.gif b/test/unit/fixtures/logo.gif
new file mode 100644
index 0000000..71574ab
Binary files /dev/null and b/test/unit/fixtures/logo.gif differ
diff --git a/test/unit/form.html b/test/unit/form.html
new file mode 100644
index 0000000..54a7d9e
--- /dev/null
+++ b/test/unit/form.html
@@ -0,0 +1,280 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+  <title>Prototype Unit test file</title>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8" />
+  <script src="../../dist/prototype.js" type="text/javascript"></script>
+  <script src="../lib/unittest.js" type="text/javascript"></script>
+  <link rel="stylesheet" href="../test.css" type="text/css" />
+  <style type="text/css" media="screen">
+  /* <![CDATA[ */
+    #testcss1 { font-size:11px; color: #f00; }
+    #testcss2 { font-size:12px; color: #0f0; display: none; }
+  /* ]]> */
+  </style>
+</head>
+<body>
+<h1>Prototype Unit test file</h1>
+<p>
+  Test of utility functions in form.js
+</p>
+
+<!-- Log output -->
+<div id="testlog"> </div>
+
+<form id="form">
+  <input type="text" name="val1" id="input_enabled" value="4" />
+  <div>This is not a form element</div>
+  <input type="text" name="val2" id="input_disabled" disabled="disabled" value="5" />
+  <input type="submit" />
+</form>
+<div id="form_wrapper">
+  <form id="form_selects">
+    <select name="vu">
+       <option value="1" selected="selected">One</option>
+       <option value="2">Two</option>
+       <option value="3">Three</option>
+    </select>
+    <select id="multiSel1" name="vm[]" multiple="multiple">
+       <option id="multiSel1_opt1" value="1" selected="selected">One</option>
+       <option id="multiSel1_opt2" value="2">Two</option>
+       <option id="multiSel1_opt3" value="3" selected="selected">Three</option>
+    </select>
+    <select name="nvu">
+       <option selected="selected">One</option>
+       <option value="2">Two</option>
+       <option value="3">Three</option>
+    </select>
+    <fieldset id="form_fieldset">
+      <select name="nvm[]" multiple="multiple">
+         <option selected="selected">One</option>
+         <option>Two</option>
+         <option selected="selected">Three</option>
+      </select>
+      <select name="evu">
+         <option value="" selected="selected">One</option>
+         <option value="2">Two</option>
+         <option value="3">Three</option>
+      </select>
+      <select name="evm[]" multiple="multiple">
+         <option value="" selected="selected">One</option>
+         <option>Two</option>
+         <option selected="selected">Three</option>
+      </select>
+    </fieldset>
+  </form>
+</div>
+
+<form id="form_getelements">
+  <select id="tf_selectOne" name="tf_selectOne"><option></option><option>1</option></select>
+  <textarea id="tf_textarea" name="tf_textarea"></textarea>
+  <input type="checkbox" id="tf_checkbox" name="tf_checkbox" value="on" />
+  <select id="tf_selectMany" name="tf_selectMany" multiple="multiple"></select>
+  <input type="text" id="tf_text" name="tf_text" />
+  <div>This is not a form element</div>
+  <input type="radio" id="tf_radio" name="tf_radio" value="on" />
+  <input type="hidden" id="tf_hidden" name="tf_hidden" />
+  <input type="password" id="tf_password" name="tf_password" />
+</form>
+
+<form id="form_focus">
+  <input type="text" name="focus_disabled" id="focus_disabled" disabled="disabled"/>
+  <input type="submit" name="focus_submit" id="focus_submit" />
+  <input type="button" name="focus_button" id="focus_button" value="button" />
+  <input type="reset" name="focus_reset" id="focus_reset" />
+  <input type="text" name="focus_text" id="focus_text" value="Hello" />
+</form>
+
+<!-- Tests follow -->
+<script type="text/javascript" language="javascript" charset="utf-8">
+// <![CDATA[
+  var callbackCounter = 0;
+  var timedCounter = 0;
+
+  new Test.Unit.Runner({
+    
+    // Make sure to set defaults in the test forms, as some browsers override this
+    // with previously entered values on page reload
+    setup: function(){ with(this) {
+      $('input_enabled').value = '4';
+      $('input_disabled').value = '5';
+      
+      $('tf_selectOne').selectedIndex = 0;
+      $('tf_textarea').value = '';
+      $('tf_text').value = '';
+      $('tf_hidden').value = '';
+      $('tf_password').value = '';
+      $('tf_checkbox').checked = false;
+      $('tf_radio').checked = false;
+    }},
+    
+    testFormElementEventObserver: function(){ with(this) {
+      var observer = new Form.Element.EventObserver('input_enabled', function(){
+        callbackCounter++;
+      });
+      
+      assertEqual(0, callbackCounter);
+      $('input_enabled').value = 'boo!';
+      observer.onElementEvent(); // can't test the event directly, simulating
+      assertEqual(1, callbackCounter);
+    }},
+
+    testFormElementObserver: function(){ with(this) {
+      // First part: regular field
+      var observer = new Form.Element.Observer('input_enabled', 0.5, function() {
+        ++timedCounter;
+      });
+
+      // Test it's unchanged yet
+      assertEqual(0, timedCounter);
+      // Test it doesn't change on first check
+      wait(550, function() {
+        assertEqual(0, timedCounter);
+        // Change, test it doesn't immediately change
+        $('input_enabled').value = 'yowza!';
+        assertEqual(0, timedCounter);
+        // Test it changes on next check, but not again on the next
+        wait(550, function() {
+          assertEqual(1, timedCounter);
+          wait(550, function() {
+            assertEqual(1, timedCounter);
+          });
+        });
+      });
+
+      // Second part: multiple-select! -- Fails before patch in #6593.
+      [1, 2, 3].each(function(index) {
+        $('multiSel1_opt' + index).selected = (1 == index);
+      });
+      timedCounter = 0;
+      observer = new Form.Element.Observer('multiSel1', 0.5, function() {
+        ++timedCounter;
+      });
+
+      // Test it's unchanged yet
+      assertEqual(0, timedCounter);
+      // Test it doesn't change on first check
+      wait(550, function() {
+        assertEqual(0, timedCounter);
+        // Change, test it doesn't immediately change
+        // NOTE: it is important that the 3rd be re-selected, for the
+        // serialize form to obtain the expected value :-)
+        $('multiSel1_opt3').selected = true;
+        assertEqual(0, timedCounter);
+        // Test it changes on next check, but not again on the next
+        wait(550, function() {
+          assertEqual(1, timedCounter);
+          wait(550, function() {
+            assertEqual(1, timedCounter);
+          });
+        });
+      });
+    }},
+    
+    testFormElementEnabling: function(){ with(this) {
+      assert($('input_disabled').disabled);
+      $('input_disabled').enable();
+      assert(!$('input_disabled').disabled);
+      $('input_disabled').disable();
+      assert($('input_disabled').disabled);
+      
+      assert(!$('input_enabled').disabled);
+      $('input_enabled').disable();
+      assert($('input_enabled').disabled);
+      $('input_enabled').enable();
+      assert(!$('input_enabled').disabled);
+    }},
+    
+    // due to the lack of a DOM hasFocus() API method,
+    // we're simulating things here a little bit
+    testFormActivating: function(){ with(this) {
+      // Firefox, IE, and Safari 2+
+      function getSelection(element){
+        try {
+          if (typeof element.selectionStart == 'number') {
+            return element.value.substring(element.selectionStart, element.selectionEnd);
+          } else if (document.selection && document.selection.createRange) {
+            return document.selection.createRange().text;
+          }
+        }
+        catch(e){ return null }
+      }
+      
+      // Form.focusFirstElement shouldn't focus disabled elements
+      var element = Form.findFirstElement('form_focus');
+      assertEqual('focus_submit',element.id);
+      
+      // Test IE doesn't select text on buttons
+      Form.focusFirstElement('form_focus');
+      if(document.selection) assertEqual('', getSelection(element));
+      
+      // Form.Field.activate shouldn't select text on buttons
+      element = $('focus_text');
+      assertEqual('', getSelection(element));
+        
+      // Form.Field.activate should select text on text input elements
+      element.activate();
+      assertEqual('Hello', getSelection(element));
+    }},
+    
+    testFormGetElements: function() {with(this) {
+      var formElements = $('form_getelements').getElements();
+      assertEqual(8, formElements.length);
+      assertEqual('tf_selectOne', formElements[0].id);
+      assertEqual('tf_textarea', formElements[1].id);
+      assertEqual('tf_checkbox', formElements[2].id);
+      assertEqual('tf_selectMany', formElements[3].id);
+      assertEqual('tf_text', formElements[4].id);
+      assertEqual('tf_radio', formElements[5].id);
+      assertEqual('tf_hidden', formElements[6].id);
+      assertEqual('tf_password', formElements[7].id);
+    }},
+    
+    testFormGetInputs: function() {with(this){
+      var form = $('form_getelements'), formInputs = Form.getInputs(form);
+      assertEqual(formInputs.length, 5);
+      assert(formInputs instanceof Array);
+      assert(formInputs.all(function(input) { return (input.tagName == "INPUT"); }));
+      
+      var formInputs2 = form.getInputs();
+      assertEqual(formInputs2.length, 5);
+      assert(formInputs2 instanceof Array);
+      assert(formInputs2.all(function(input) { return (input.tagName == "INPUT"); }));
+    }},
+    
+    testFormSerialize: function() {with(this){
+      assertEqual('tf_selectOne=&tf_textarea=&tf_text=&tf_hidden=&tf_password=', 
+        Form.serialize('form_getelements'));
+        
+      $('tf_selectOne').selectedIndex = 1;
+      $('tf_textarea').value = "boo hoo!";
+      $('tf_text').value = "123öäü";
+      $('tf_hidden').value = "moo%hoo&test";
+      $('tf_password').value = 'sekrit code';
+      $('tf_checkbox').checked = true;
+      $('tf_radio').checked = true;
+      
+      assertEqual(
+        'tf_selectOne=1&tf_textarea=boo%20hoo!&tf_checkbox=on&tf_text=123%C3%B6%C3%A4%C3%BC&'+
+        'tf_radio=on&tf_hidden=moo%25hoo%26test&tf_password=sekrit%20code',
+        Form.serialize('form_getelements'));
+
+      // Checks that disabled element is not included in serialized form.
+      $('input_enabled').enable();
+      assertEqual('val1=4', Form.serialize('form'));
+
+       // Checks that select-related serializations work just fine
+       assertEqual('vu=1&vm%5B%5D=1&vm%5B%5D=3&nvu=One&nvm%5B%5D=One&nvm%5B%5D=Three&evu=&evm%5B%5D=&evm%5B%5D=Three', Form.serialize('form_selects'));
+    }},
+    
+    testFormSerializeWorksWithNonFormElements: function() {with(this) {
+      assertEqual('nvm%5B%5D=One&nvm%5B%5D=Three&evu=&evm%5B%5D=&evm%5B%5D=Three', Form.serialize('form_fieldset'));
+      assertEqual('vu=1&vm%5B%5D=1&vm%5B%5D=3&nvu=One&nvm%5B%5D=One&nvm%5B%5D=Three&evu=&evm%5B%5D=&evm%5B%5D=Three', Form.serialize('form_wrapper'));
+    }} 
+    
+  }, 'testlog');
+// ]]>
+</script>
+</body>
+</html>
diff --git a/test/unit/hash.html b/test/unit/hash.html
new file mode 100644
index 0000000..d4d74a1
--- /dev/null
+++ b/test/unit/hash.html
@@ -0,0 +1,119 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+  <title>Prototype Unit test file</title>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8" />
+  <script src="../../dist/prototype.js" type="text/javascript"></script>
+  <script src="../lib/unittest.js" type="text/javascript"></script>
+  <link rel="stylesheet" href="../test.css" type="text/css" />
+  <style type="text/css" media="screen">
+  /* <![CDATA[ */
+    #testcss1 { font-size:11px; color: #f00; }
+    #testcss2 { font-size:12px; color: #0f0; display: none; }
+  /* ]]> */
+  </style>
+</head>
+<body>
+<h1>Prototype Unit test file</h1>
+<p>
+  Test of the Hash.prototype extensions
+</p>
+
+<!-- Log output -->
+<div id="testlog"> </div>
+
+<!-- Tests follow -->
+<script type="text/javascript" language="javascript" charset="utf-8">
+// <![CDATA[
+
+  var Fixtures = {
+    one: { a: 'A#' },
+    
+    many: {
+      a: 'A',
+      b: 'B',
+      c: 'C',
+      d: 'D#'
+    },
+
+    functions: {
+      alpha: 'foo',
+      beta:  function(n) { return n+1; }
+    },
+    
+    multiple:         { color: $w('r g b') },
+    multiple_nil:     { color: ['r', null, 'g', undefined, 0] },
+    multiple_all_nil: { color: [null, undefined] },
+    multiple_empty:   { color: [] },
+
+    value_undefined:  { a:"b", c:undefined },
+    value_null:       { a:"b", c:null },
+    value_zero:       { a:"b", c:0 },
+
+    dangerous: {
+      _each: 'E',
+      map: 'M',
+      keys: 'K',
+      values: 'V',
+      collect: 'C',
+      inject: 'I'
+    }
+  };
+  
+  new Test.Unit.Runner({
+    
+    testKeys: function(){ with(this) {
+      assertEnumEqual([],               $H({}).keys())
+      assertEnumEqual(['a'],            $H(Fixtures.one).keys())
+      assertEnumEqual($w('a b c d'),    $H(Fixtures.many).keys())
+      assertEnumEqual($w('alpha beta'), $H(Fixtures.functions).keys())
+    }},
+    
+    testValues: function(){ with(this) {
+      assertEnumEqual([],             $H({}).values())
+      assertEnumEqual(['A#'],         $H(Fixtures.one).values())
+      assertEnumEqual($w('A B C D#'), $H(Fixtures.many).values())
+      assertEqual('function', typeof $H(Fixtures.functions).values()[1])
+      assertEqual(2, $H(Fixtures.functions).beta(1))
+    }},  
+      
+    testMerge: function(){ with(this) {
+      assertEqual($H(Fixtures.many).inspect(), $H(Fixtures.many).merge().inspect());
+      assertEqual($H(Fixtures.many).inspect(), $H(Fixtures.many).merge({}).inspect());
+      assertEqual("#<Hash:{'a': 'A', 'b': 'B', 'c': 'C', 'd': 'D#', 'aaa': 'AAA'}>", $H(Fixtures.many).merge({aaa: 'AAA'}).inspect());
+      assertEqual("#<Hash:{'a': 'A#', 'b': 'B', 'c': 'C', 'd': 'D#'}>", $H(Fixtures.many).merge(Fixtures.one).inspect());
+    }},
+
+    testRemove: function(){ with(this) {
+      var hash = $H(Fixtures.many)
+      var values = hash.remove('b', 'c')
+      assertEnumEqual($w('a d'), hash.keys())
+      assertEnumEqual($w('B C'), values)
+    }},
+    
+    testToQueryString: function(){ with(this) {
+      assertEqual('',                        $H({}).toQueryString())
+      assertEqual('a=A%23',                  $H(Fixtures.one).toQueryString())
+      assertEqual('a=A&b=B&c=C&d=D%23',      $H(Fixtures.many).toQueryString())
+      assertEqual("a=b&c=",                  $H(Fixtures.value_undefined).toQueryString())
+      assertEqual("a=b&c=",                  $H(Fixtures.value_null).toQueryString())
+      assertEqual("a=b&c=0",                 $H(Fixtures.value_zero).toQueryString())
+      assertEqual("color=r&color=g&color=b", $H(Fixtures.multiple).toQueryString())
+      assertEqual("color=r&color=g&color=0", $H(Fixtures.multiple_nil).toQueryString())
+      assertEqual("color=",                  $H(Fixtures.multiple_all_nil).toQueryString())
+      assertEqual("color=",                  $H(Fixtures.multiple_empty).toQueryString())
+      
+      assertEqual("_each=E&map=M&keys=K&values=V&collect=C&inject=I", Hash.toQueryString(Fixtures.dangerous))
+    }},
+    
+    testInspect: function(){ with(this) {
+      assertEqual('#<Hash:{}>',              $H({}).inspect());
+      assertEqual("#<Hash:{'a': 'A#'}>",     $H(Fixtures.one).inspect());
+      assertEqual("#<Hash:{'a': 'A', 'b': 'B', 'c': 'C', 'd': 'D#'}>", $H(Fixtures.many).inspect());
+    }}
+  }, 'testlog');
+// ]]>
+</script>
+</body>
+</html>
diff --git a/test/unit/position.html b/test/unit/position.html
new file mode 100644
index 0000000..b6dc5ac
--- /dev/null
+++ b/test/unit/position.html
@@ -0,0 +1,118 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+  <title>Prototype Unit test file</title>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8" />
+  <script src="../../dist/prototype.js" type="text/javascript"></script>
+  <script src="../lib/unittest.js" type="text/javascript"></script>
+  <link rel="stylesheet" href="../test.css" type="text/css" />
+  <style type="text/css" media="screen">
+  /* <![CDATA[ */
+    #testcss1 { font-size:11px; color: #f00; }
+    #testcss2 { font-size:12px; color: #0f0; display: none; }
+  /* ]]> */
+  </style>
+</head>
+<body>
+<div id="ensure_scrollbars" style="width:10000px; height:10000px; position:absolute" > </div>
+  
+<h1>Prototype Unit test file</h1>
+<p>
+  Test of functions in position.js
+</p>
+
+<!-- Log output -->
+<div id="testlog"> </div>
+
+<div id="body_absolute" style="position: absolute; top: 10px; left: 10px">
+  <div id="absolute_absolute" style="position: absolute; top: 10px; left:10px"> </div>
+  <div id="absolute_relative" style="position: relative; top: 10px; left:10px">
+    <div style="height:10px">test<span id="inline">test</span></div>
+    <div id="absolute_relative_undefined"> </div>
+  </div>
+</div>
+ 
+<!-- Tests follow -->
+<script type="text/javascript" language="javascript" charset="utf-8">
+// <![CDATA[
+
+  var testVar = 'to be updated';
+
+  new Test.Unit.Runner({
+    
+    setup: function() {
+      scrollTo(0,0);
+      Position.prepare();
+      Position.includeScrollOffsets = false;
+    },
+    
+    teardown: function() {
+      scrollTo(0,0);
+      Position.prepare();
+      Position.includeScrollOffsets = false;
+    },
+    
+    testPrepare: function() {with(this) {
+      Position.prepare();
+      assertEqual(0, Position.deltaX);
+      assertEqual(0, Position.deltaY);
+      scrollTo(20,30);
+      Position.prepare();
+      assertEqual(20, Position.deltaX);
+      assertEqual(30, Position.deltaY);
+    }},
+    
+    testPositionedOffset: function() {with(this) {
+      assertEnumEqual([10,10],
+        Position.positionedOffset($('body_absolute')));
+      assertEnumEqual([10,10],
+        Position.positionedOffset($('absolute_absolute')));
+      assertEnumEqual([10,10],
+        Position.positionedOffset($('absolute_relative')));
+      assertEnumEqual([0,10],
+        Position.positionedOffset($('absolute_relative_undefined')));
+    }},
+    
+    testPage: function() {with(this) {
+      assertEnumEqual([10,10],
+        Position.page($('body_absolute')));
+      assertEnumEqual([20,20],
+        Position.page($('absolute_absolute')));
+      assertEnumEqual([20,20],
+        Position.page($('absolute_relative')));
+      assertEnumEqual([20,30],
+        Position.page($('absolute_relative_undefined')));
+    }},
+    
+    testOffsetParent: function() {with(this) {
+      assertEqual('body_absolute', Position.offsetParent($('absolute_absolute')).id);
+      assertEqual('body_absolute', Position.offsetParent($('absolute_relative')).id);
+      assertEqual('absolute_relative', Position.offsetParent($('inline')).id);
+      assertEqual('absolute_relative', Position.offsetParent($('absolute_relative_undefined')).id);
+    }},
+    
+    testWithin: function() {with(this) {
+      [true, false].each(function(withScrollOffsets) {
+        Position.includeScrollOffsets = withScrollOffsets;
+        assert(!Position.within($('body_absolute'), 9, 9), 'outside left/top');
+        assert(Position.within($('body_absolute'), 10, 10), 'left/top corner');
+        assert(Position.within($('body_absolute'), 10, 19), 'left/bottom corner');
+        assert(!Position.within($('body_absolute'), 10, 20), 'outside bottom');
+      });
+      
+      scrollTo(20,30);
+      Position.prepare();
+      Position.includeScrollOffsets = true;
+      assert(!Position.within($('body_absolute'), 9, 9), 'outside left/top');
+      assert(Position.within($('body_absolute'), 10, 10), 'left/top corner');
+      assert(Position.within($('body_absolute'), 10, 19), 'left/bottom corner');
+      assert(!Position.within($('body_absolute'), 10, 20), 'outside bottom');
+    }}
+    
+  }, 'testlog');
+
+// ]]>
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/test/unit/range.html b/test/unit/range.html
new file mode 100644
index 0000000..54f3de2
--- /dev/null
+++ b/test/unit/range.html
@@ -0,0 +1,93 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+  <title>Prototype Unit test file</title>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8" />
+  <script src="../../dist/prototype.js" type="text/javascript"></script>
+  <script src="../lib/unittest.js" type="text/javascript"></script>
+  <link rel="stylesheet" href="../test.css" type="text/css" />
+  <style type="text/css" media="screen">
+  /* <![CDATA[ */
+    #testcss1 { font-size:11px; color: #f00; }
+    #testcss2 { font-size:12px; color: #0f0; display: none; }
+  /* ]]> */
+  </style>
+</head>
+<body>
+<h1>Prototype Unit test file</h1>
+<p>
+  Test of utility functions in range.js
+</p>
+
+<!-- Log output -->
+<div id="testlog"> </div>
+
+<!-- Tests follow -->
+<script type="text/javascript" language="javascript" charset="utf-8">
+// <![CDATA[
+  new Test.Unit.Runner({
+    
+    testInclude: function() {with(this) {
+      assert(!$R(0, 0, true).include(0));
+      assert($R(0, 0, false).include(0));
+
+      assert($R(0, 5, true).include(0));
+      assert($R(0, 5, true).include(4));
+      assert(!$R(0, 5, true).include(5));
+
+      assert($R(0, 5, false).include(0));
+      assert($R(0, 5, false).include(5));
+      assert(!$R(0, 5, false).include(6));
+    }},
+
+    testEach: function() {with(this) {
+      var results = [];
+      $R(0, 0, true).each(function(value) {
+        results.push(value);
+      });
+
+      assertEnumEqual([], results);
+
+      results = [];
+      $R(0, 3, false).each(function(value) {
+        results.push(value);
+      });
+
+      assertEnumEqual([0, 1, 2, 3], results);
+    }},
+
+    testAny: function() {with(this) {
+      assert(!$R(1, 1, true).any());
+      assert($R(0, 3, false).any(function(value) {
+        return value == 3;
+      }));
+    }},
+
+    testAll: function() {with(this) {
+      assert($R(1, 1, true).all());
+      assert($R(0, 3, false).all(function(value) {
+        return value <= 3;
+      }));
+    }},
+
+    testToArray: function() {with(this) {
+      assertEnumEqual([], $R(0, 0, true).toArray());
+      assertEnumEqual([0], $R(0, 0, false).toArray());
+      assertEnumEqual([0], $R(0, 1, true).toArray());
+      assertEnumEqual([0, 1], $R(0, 1, false).toArray());
+      assertEnumEqual([-3, -2, -1, 0, 1, 2], $R(-3, 3, true).toArray());
+      assertEnumEqual([-3, -2, -1, 0, 1, 2, 3], $R(-3, 3, false).toArray());
+    }},
+    
+    testDefaultsToNotExclusive: function() {with(this) {
+      assertEnumEqual(
+        $R(-3,3), $R(-3,3,false)
+      );
+    }}
+    
+  }, 'testlog');
+// ]]>
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/test/unit/selector.html b/test/unit/selector.html
new file mode 100644
index 0000000..3287d7e
--- /dev/null
+++ b/test/unit/selector.html
@@ -0,0 +1,157 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+  <title>Prototype Unit test file</title>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8" />
+  <script src="../../dist/prototype.js" type="text/javascript"></script>
+  <script src="../lib/unittest.js" type="text/javascript"></script>
+  <link rel="stylesheet" href="../test.css" type="text/css" />
+  <style type="text/css" media="screen">
+  /* <![CDATA[ */
+    #testcss1 { font-size:11px; color: #f00; }
+    #testcss2 { font-size:12px; color: #0f0; display: none; }
+  /* ]]> */
+  </style>
+</head>
+<body>
+<h1>Prototype Unit test file</h1>
+<p>
+  Test of utility functions in selector.js
+</p>
+
+<div id="fixtures" style="display: none">
+  <h1 class="title">Some title <span>here</span></h1>
+  <p id="p" class="first summary">
+    <strong id="strong">This</strong> is a short blurb
+    <a id="link_1" class="first internal" href="#">with a link</a> or 
+    <a id="link_2" class="internal highlight" href="#"><em id="em">two</em></a>.
+    Or <cite id="with_title" title="hello world!">three</cite>.
+  </p>
+  <ul id="list">
+    <li id="item_1" class="first"><a id="link_3" href="#" class="external"><span id="span">Another link</span></a></li>
+    <li id="item_2">Some text</li>
+		<li id="item_3" xml:lang="es-us" class="">Otra cosa</li>
+  </ul>
+
+  <!-- this form has a field with the name 'id',
+    therefore its ID property won't be 'troubleForm': -->
+  <form id="troubleForm"><input type="hidden" name="id" /></form>
+</div>
+
+<!-- Log output -->
+<div id="testlog"> </div>
+
+<!-- Tests follow -->
+<script type="text/javascript" language="javascript" charset="utf-8">
+// <![CDATA[
+  new Test.Unit.Runner({
+    testSelectorWithTagName: function() {with(this) {
+      assertEnumEqual($A(document.getElementsByTagName('li')), $$('li'));
+      assertEnumEqual([$('strong')], $$('strong'));
+      assertEnumEqual([], $$('nonexistent'));
+      assertEnumEqual($A(document.getElementsByTagName('*')), $$('*'));
+    }},
+    
+    testSelectorWithId: function() {with(this) {
+      assertEnumEqual([$('fixtures')], $$('#fixtures'));
+      assertEnumEqual([], $$('#nonexistent'));
+      assertEnumEqual([$('troubleForm')], $$('#troubleForm'));
+    }},
+    
+    testSelectorWithClassName: function() {with(this) {
+      assertEnumEqual($('p', 'link_1', 'item_1'), $$('.first'));
+      assertEnumEqual([], $$('.second'));
+    }},
+    
+    testSelectorWithTagNameAndId: function() {with(this) {
+      assertEnumEqual([$('strong')], $$('strong#strong'));
+      assertEnumEqual([], $$('p#strong'));
+    }},
+    
+    testSelectorWithTagNameAndClassName: function() {with(this) {
+      assertEnumEqual($('link_1', 'link_2'), $$('a.internal'));
+      assertEnumEqual([$('link_2')], $$('a.internal.highlight'));
+      assertEnumEqual([$('link_2')], $$('a.highlight.internal'));
+      assertEnumEqual([], $$('a.highlight.internal.nonexistent'));
+    }},
+    
+    testSelectorWithIdAndClassName: function() {with(this) {
+      assertEnumEqual([$('link_2')], $$('#link_2.internal'));
+      assertEnumEqual([$('link_2')], $$('.internal#link_2'));
+      assertEnumEqual([$('link_2')], $$('#link_2.internal.highlight'));
+      assertEnumEqual([], $$('#link_2.internal.nonexistent'));
+    }},
+    
+    testSelectorWithTagNameAndIdAndClassName: function() {with(this) {
+      assertEnumEqual([$('link_2')], $$('a#link_2.internal'));
+      assertEnumEqual([$('link_2')], $$('a.internal#link_2'));
+      assertEnumEqual([$('item_1')], $$('li#item_1.first'));
+      assertEnumEqual([], $$('li#item_1.nonexistent'));
+      assertEnumEqual([], $$('li#item_1.first.nonexistent'));
+    }},
+    
+    test$$MatchesAncestryWithTokensSeparatedByWhitespace: function() {with(this) {
+      assertEnumEqual($('em', 'span'), $$('#fixtures a *'));
+      assertEnumEqual([$('p')], $$('div#fixtures p'));
+    }},
+    
+    test$$CombinesResultsWhenMultipleExpressionsArePassed: function() {with(this) {
+      assertEnumEqual($('link_1', 'link_2', 'item_1', 'item_2', 'item_3'), $$('#p a', ' ul#list li '));
+    }},
+
+    testSelectorWithTagNameAndAttributeExistence: function() {with(this) {
+      assertEnumEqual($$('#fixtures h1'), $$('h1[class]'));
+      assertEnumEqual($$('#fixtures h1'), $$('h1[CLASS]'));
+      assertEnumEqual([$('item_3')], $$('li#item_3[class]'));
+    }},
+    
+    testSelectorWithTagNameAndSpecificAttributeValue: function() {with(this) {
+      assertEnumEqual($('link_1', 'link_2', 'link_3'), $$('a[href="#"]'));
+      assertEnumEqual($('link_1', 'link_2', 'link_3'), $$('a[href=#]'));
+    }},
+    
+    testSelectorWithTagNameAndWhitespaceTokenizedAttributeValue: function() {with(this) {
+      assertEnumEqual($('link_1', 'link_2'), $$('a[class~="internal"]'));
+      assertEnumEqual($('link_1', 'link_2'), $$('a[class~=internal]'));
+    }},
+    
+    testSelectorWithUniversalAndHyphenTokenizedAttributeValue: function() {with(this) {
+      assertEnumEqual([$('item_3')], $$('*[xml:lang|="es"]'));
+      assertEnumEqual([$('item_3')], $$('*[xml:lang|="ES"]'));
+    }},
+    
+    testSelectorWithTagNameAndNegatedAttributeValue: function() {with(this) {
+      assertEnumEqual([], $$('a[href!=#]'));
+    }},
+    
+    test$$WithNestedAttributeSelectors: function() {with(this) {
+      assertEnumEqual([$('strong')], $$('div[style] p[id] strong'));
+    }},
+    
+    testSelectorWithMultipleConditions: function() {with(this) {
+      assertEnumEqual([$('link_3')], $$('a[class~=external][href="#"]'));
+      assertEnumEqual([], $$('a[class~=external][href!="#"]'));
+    }},
+    
+    testSelectorMatchElements: function() {with(this) {
+      assertElementsMatch(Selector.matchElements($('list').descendants(), 'li'), '#item_1', '#item_2', '#item_3');
+      assertElementsMatch(Selector.matchElements($('fixtures').descendants(), 'a.internal'), '#link_1', '#link_2');
+      assertEnumEqual([], Selector.matchElements($('fixtures').descendants(), 'p.last'));
+    }},
+    
+    testSelectorFindElement: function() {with(this) {
+      assertElementMatches(Selector.findElement($('list').descendants(), 'li'), 'li#item_1.first');
+      assertElementMatches(Selector.findElement($('list').descendants(), 'li', 1), 'li#item_2');
+      assertElementMatches(Selector.findElement($('list').descendants(), 'li#item_3'), 'li');
+      assertEqual(undefined, Selector.findElement($('list').descendants(), 'em'));
+    }},
+
+    testSelectorWithSpaceInAttributeValue: function() {with(this) {
+      assertEnumEqual([$('with_title')], $$('cite[title="hello world!"]'));
+    }}    
+  }, 'testlog');
+// ]]>
+</script>
+</body>
+</html>
diff --git a/test/unit/string.html b/test/unit/string.html
new file mode 100644
index 0000000..9322932
--- /dev/null
+++ b/test/unit/string.html
@@ -0,0 +1,337 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+  <title>Prototype Unit test file</title>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8" />
+  <script src="../../dist/prototype.js" type="text/javascript"></script>
+  <script src="../lib/unittest.js" type="text/javascript"></script>
+  <link rel="stylesheet" href="../test.css" type="text/css" />
+  <style type="text/css" media="screen">
+  /* <![CDATA[ */
+    #testcss1 { font-size:11px; color: #f00; }
+    #testcss2 { font-size:12px; color: #0f0; display: none; }
+  /* ]]> */
+  </style>
+</head>
+<body>
+<h1>Prototype Unit test file</h1>
+<p>
+  Test of utility functions in string.js
+</p>
+
+<!-- Log output -->
+<div id="testlog"> </div>
+
+<!-- Tests follow -->
+<script type="text/javascript" language="javascript" charset="utf-8">
+// <![CDATA[
+  var evalScriptsCounter = 0,
+      largeTextEscaped = '&lt;span&gt;test&lt;/span&gt;', 
+      largeTextUnescaped = '<span>test</span>';
+  (2048).times(function(){ 
+    largeTextEscaped += ' ABC';
+    largeTextUnescaped += ' ABC';
+  });
+  
+  new Test.Unit.Runner({
+    testInterpret: function(){with(this) {
+      assertIdentical('true', String.interpret(true));
+      assertIdentical('123',  String.interpret(123));
+      assertIdentical('foo bar', String.interpret('foo bar'));
+      assertIdentical(
+        'object string',
+        String.interpret({ toString: function(){ return 'object string' } }));
+
+      assertIdentical('0', String.interpret(0));
+      assertIdentical('false', String.interpret(false));
+      assertIdentical('', String.interpret(undefined));
+      assertIdentical('', String.interpret(null));
+      assertIdentical('', String.interpret(''));
+    }},
+
+    testGsubWithReplacementFunction: function() {with(this) {
+      var source = 'foo boo boz';
+      
+      assertEqual('Foo Boo BoZ',
+        source.gsub(/[^o]+/, function(match) {
+          return match[0].toUpperCase()
+        }));
+      assertEqual('f2 b2 b1z',
+        source.gsub(/o+/, function(match) {
+          return match[0].length;
+        }));
+      assertEqual('f0 b0 b1z',
+        source.gsub(/o+/, function(match) {
+          return match[0].length % 2;
+        }));
+
+    }},
+    
+    testGsubWithReplacementString: function() {with(this) {
+      var source = 'foo boo boz';
+      
+      assertEqual('foobooboz',
+        source.gsub(/\s+/, ''));
+      assertEqual('  z', 
+        source.gsub(/(.)(o+)/, ''));
+    }},
+    
+    testGsubWithReplacementTemplateString: function() {with(this) {
+      var source = 'foo boo boz';
+      
+      assertEqual('-oo-#{1}- -oo-#{1}- -o-#{1}-z',
+        source.gsub(/(.)(o+)/, '-#{2}-\\#{1}-'));
+      assertEqual('-foo-f- -boo-b- -bo-b-z',
+        source.gsub(/(.)(o+)/, '-#{0}-#{1}-'));
+      assertEqual('-oo-f- -oo-b- -o-b-z',
+        source.gsub(/(.)(o+)/, '-#{2}-#{1}-'));
+      assertEqual('  z',
+        source.gsub(/(.)(o+)/, '#{3}'));      
+    }},
+    
+    testSubWithReplacementFunction: function() {with(this) {
+      var source = 'foo boo boz';
+
+      assertEqual('Foo boo boz',
+        source.sub(/[^o]+/, function(match) {
+          return match[0].toUpperCase()
+        }), 1);
+      assertEqual('Foo Boo boz',
+        source.sub(/[^o]+/, function(match) {
+          return match[0].toUpperCase()
+        }, 2), 2);
+      assertEqual(source,
+        source.sub(/[^o]+/, function(match) {
+          return match[0].toUpperCase()
+        }, 0), 0);
+      assertEqual(source,
+        source.sub(/[^o]+/, function(match) {
+          return match[0].toUpperCase()
+        }, -1), -1);
+    }},
+    
+    testSubWithReplacementString: function() {with(this) {
+      var source = 'foo boo boz';
+      
+      assertEqual('oo boo boz',
+        source.sub(/[^o]+/, ''));
+      assertEqual('oooo boz',
+        source.sub(/[^o]+/, '', 2));
+      assertEqual('-f-oo boo boz',
+        source.sub(/[^o]+/, '-#{0}-'));
+      assertEqual('-f-oo- b-oo boz',
+        source.sub(/[^o]+/, '-#{0}-', 2));
+    }},
+    
+    testScan: function() {with(this) {
+      var source = 'foo boo boz', results = [];
+      source.scan(/[o]+/, function(match) {
+        results.push(match[0].length);
+      });
+      assertEnumEqual([2, 2, 1], results);
+      assertEqual(source, source.scan(/x/, fail));
+    }},
+    
+    testToArray: function() {with(this) {
+      assertEnumEqual([],''.toArray());
+      assertEnumEqual(['a'],'a'.toArray());
+      assertEnumEqual(['a','b'],'ab'.toArray());
+      assertEnumEqual(['f','o','o'],'foo'.toArray());
+    }},
+    
+    /* 
+      Note that camelize() differs from its Rails counterpart,
+      as it is optimized for dealing with JavaScript object
+      properties in conjunction with CSS property names:
+       - Looks for dashes, not underscores
+       - CamelCases first word if there is a front dash
+    */
+    testCamelize: function() {with(this) {
+      assertEqual('', ''.camelize());
+      assertEqual('', '-'.camelize());
+      assertEqual('foo', 'foo'.camelize());
+      assertEqual('foo_bar', 'foo_bar'.camelize());
+      assertEqual('FooBar', '-foo-bar'.camelize());
+      assertEqual('FooBar', 'FooBar'.camelize());
+      
+      assertEqual('fooBar', 'foo-bar'.camelize());
+      assertEqual('borderBottomWidth', 'border-bottom-width'.camelize());
+      
+      assertEqual('classNameTest','class-name-test'.camelize());
+      assertEqual('classNameTest','className-test'.camelize());
+      assertEqual('classNameTest','class-nameTest'.camelize());
+      
+      /* benchmark(function(){
+        'class-name-test'.camelize();
+      },10000); */
+    }},
+
+    testCapitalize: function() {with(this) {
+      assertEqual('',''.capitalize());
+      assertEqual('Ä','ä'.capitalize());
+      assertEqual('A','A'.capitalize());
+      assertEqual('Hello','hello'.capitalize());
+      assertEqual('Hello','HELLO'.capitalize());
+      assertEqual('Hello','Hello'.capitalize());
+      assertEqual('Hello world','hello WORLD'.capitalize());
+    }},  
+      
+    testUnderscore: function() {with(this) {
+      assertEqual('', ''.underscore());
+      assertEqual('_', '-'.underscore());
+      assertEqual('foo', 'foo'.underscore());
+      assertEqual('foo', 'Foo'.underscore());
+      assertEqual('foo_bar', 'foo_bar'.underscore());
+      assertEqual('border_bottom', 'borderBottom'.underscore());
+      assertEqual('border_bottom_width', 'borderBottomWidth'.underscore());
+      assertEqual('border_bottom_width', 'border-Bottom-Width'.underscore());      
+    }},
+    
+    testDasherize: function() {with(this) {
+      assertEqual('', ''.dasherize());
+      assertEqual('foo', 'foo'.dasherize());
+      assertEqual('Foo', 'Foo'.dasherize());
+      assertEqual('foo-bar', 'foo-bar'.dasherize());
+      assertEqual('border-bottom-width', 'border_bottom_width'.dasherize());
+    }},
+    
+    testTruncate: function() {with(this) {
+      var source = 'foo boo boz foo boo boz foo boo boz foo boo boz';
+      assertEqual(source, source.truncate(source.length));
+      assertEqual('foo boo boz foo boo boz foo...', source.truncate(0));
+      assertEqual('fo...', source.truncate(5));
+      assertEqual('foo b', source.truncate(5, ''));
+    }},
+    
+    testStrip: function() {with(this) {
+      assertEqual('hello world', '   hello world  '.strip());
+      assertEqual('hello world', 'hello world'.strip());
+      assertEqual('hello  \n  world', '  hello  \n  world  '.strip());
+      assertEqual('', ' '.strip());
+    }},
+    
+    testStripTags: function() {with(this) {
+      assertEqual('hello world', 'hello world'.stripTags());
+      assertEqual('hello world', 'hello <span>world</span>'.stripTags());
+      assertEqual('hello world', '<a href="#" onclick="moo!">hello</a> world'.stripTags());
+      assertEqual('hello world', 'h<b><em>e</em></b>l<i>l</i>o w<span class="moo" id="x"><b>o</b></span>rld'.stripTags());
+    }},
+    
+    testStripScripts: function() {with(this) {
+      assertEqual('foo bar', 'foo bar'.stripScripts());
+      assertEqual('foo bar', ('foo <script>boo();<'+'/script>bar').stripScripts());
+      assertEqual('foo bar', ('foo <script type="text/javascript">boo();\nmoo();<'+'/script>bar').stripScripts());
+    }},
+    
+    testExtractScripts: function() {with(this) {
+      assertEnumEqual([], 'foo bar'.extractScripts());
+      assertEnumEqual(['boo();'], ('foo <script>boo();<'+'/script>bar').extractScripts());
+      assertEnumEqual(['boo();','boo();\nmoo();'], 
+        ('foo <script>boo();<'+'/script><script type="text/javascript">boo();\nmoo();<'+'/script>bar').extractScripts());
+      assertEnumEqual(['boo();','boo();\nmoo();'], 
+        ('foo <script>boo();<'+'/script>blub\nblub<script type="text/javascript">boo();\nmoo();<'+'/script>bar').extractScripts());
+    }},
+    
+    testEvalScripts: function() {with(this) {
+      assertEqual(0, evalScriptsCounter);
+      
+      ('foo <script>evalScriptsCounter++<'+'/script>bar').evalScripts();
+      assertEqual(1, evalScriptsCounter);
+      
+      var stringWithScripts = '';
+      (3).times(function(){ stringWithScripts += 'foo <script>evalScriptsCounter++<'+'/script>bar' });
+      stringWithScripts.evalScripts();
+      assertEqual(4, evalScriptsCounter);
+    }},
+    
+    testEscapeHTML: function() {with(this) {
+      assertEqual('foo bar', 'foo bar'.escapeHTML());
+      assertEqual('foo &lt;span&gt;bar&lt;/span&gt;', 'foo <span>bar</span>'.escapeHTML());
+      assertEqual('foo ß bar', 'foo ß bar'.escapeHTML());
+      
+      assertEqual('a&lt;a href="blah"&gt;blub&lt;/a&gt;b&lt;span&gt;&lt;div&gt;&lt;/div&gt;&lt;/span&gt;cdef&lt;strong&gt;!!!!&lt;/strong&gt;g',
+                  'a<a href="blah">blub</a>b<span><div></div></span>cdef<strong>!!!!</strong>g'.escapeHTML());
+      
+      assertEqual(largeTextEscaped, largeTextUnescaped.escapeHTML());
+    }},
+    
+    testUnescapeHTML: function() {with(this) {
+      assertEqual('foo bar', 'foo bar'.unescapeHTML());
+      assertEqual('foo <span>bar</span>', 'foo &lt;span&gt;bar&lt;/span&gt;'.unescapeHTML());
+      assertEqual('foo ß bar', 'foo ß bar'.unescapeHTML());
+      
+      assertEqual('a<a href="blah">blub</a>b<span><div></div></span>cdef<strong>!!!!</strong>g',
+        'a&lt;a href="blah"&gt;blub&lt;/a&gt;b&lt;span&gt;&lt;div&gt;&lt;/div&gt;&lt;/span&gt;cdef&lt;strong&gt;!!!!&lt;/strong&gt;g'.unescapeHTML());
+      
+      assertEqual(largeTextUnescaped, largeTextEscaped.unescapeHTML());
+    }},
+    
+    testTemplateEvaluation: function() {with(this) {
+      var source = '<tr><td>#{name}</td><td>#{age}</td></tr>';
+      var person = {name: 'Sam', age: 21};
+      var template = new Template(source);
+      
+      assertEqual('<tr><td>Sam</td><td>21</td></tr>',
+        template.evaluate(person));
+      assertEqual('<tr><td></td><td></td></tr>',
+        template.evaluate({}));
+    }},
+
+    testTemplateEvaluationWithFalses: function() {with(this) {
+      var source = '<tr><td>#{zero}</td><td>#{false_}</td><td>#{undef}</td><td>#{null_}</td><td>#{empty}</td></tr>';
+      var falses = {zero:0, false_:false, undef:undefined, null_:null, empty:""};
+      var template = new Template(source);
+      
+      assertEqual('<tr><td>0</td><td>false</td><td></td><td></td><td></td></tr>',
+        template.evaluate(falses));
+    }},
+    
+    testToQueryParams: function() {with(this) {
+      assertEnumEqual([], Object.keys(''.toQueryParams()));
+      assertEnumEqual([], Object.keys('foo?'.toQueryParams()));
+      
+      assertEnumEqual(['a', 'b'], Object.keys('foo?a&b'.toQueryParams()));
+      assertEnumEqual(['a', 'b'], Object.keys('foo?a&b#fragment'.toQueryParams()));
+      assertEnumEqual(['a', 'b'], Object.keys('a;b'.toQueryParams(';')));
+      
+      var result = 'a'.toQueryParams();
+      assertEqual(undefined, result['a']);
+      assert(result.hasOwnProperty('a'));
+      
+      result = 'a&b=c'.toQueryParams();
+      assertEqual(undefined, result['a']);
+      assert(result.hasOwnProperty('a'));
+      assertEqual('c', result['b']);
+      
+      result = 'a%20b=c&d=e%20f&g=h'.toQueryParams();
+      assertEqual('c', result['a b']);
+      assertEqual('e f', result['d']);
+      assertEqual('h', result['g']);
+      
+      result = 'color=r&color=g&color=b'.toQueryParams();
+      assertEnumEqual(['r', 'g', 'b'], result['color']);
+      assertEnumEqual(['r', 'b'], 'c=r&c=&c=b'.toQueryParams()['c']);
+      assertEqual('blue', 'c=&c=blue'.toQueryParams()['c']);
+      assertEqual('blue', 'c=blue&c='.toQueryParams()['c']);
+    }},
+    
+    testInspect: function() {with(this) {
+      assertEqual('\'\'', ''.inspect());
+      assertEqual('\'test\'', 'test'.inspect());
+      assertEqual('\'test \\\'test\\\' "test"\'', 'test \'test\' "test"'.inspect());
+    }},
+    
+    testSucc: function() {with(this) {
+      assertEqual('b', 'a'.succ());
+      assertEqual('B', 'A'.succ());
+      assertEqual('1', '0'.succ());
+      assertEqual('abce', 'abcd'.succ());
+      assertEqual('{', 'z'.succ());
+      assertEqual(':', '9'.succ());
+    }}
+  }, 'testlog');
+// ]]>
+</script>
+</body>
+</html>