*SVN*

* Prevent a crash on Safari on String.prototype.stripScripts and extractScripts with large <script> tags.  [Thomas Fuchs]

* Prevent linefeed normalisation in String.prototype.escapeHTML and unescapeHTML on IE for consistency with other browsers. Speed optimizations for Safari and IE.  [Thomas Fuchs]

* Make Hash.toQueryString serialize undefined values. Ensure consistency with String.prototype.toQueryParams.  Closes #7806.  [Mislav Marohnić]
  Examples:
    $H({a:'b',c:undefined}).toQueryString()      -> 'a=b&c'
    $H({a:'b',c:null}).toQueryString()           -> 'a=b&c='
    $H('a=b&c'.toQueryParams()).toQueryString()  -> 'a=b&c'
    $H('a=b&c='.toQueryParams()).toQueryString() -> 'a=b&c='
    
* Fix issues with Selector an+b logic, :not support, attribute selector double quotes, plus performance improvements.  Closes #7873, #7901.  [Andrew Dupont]

* Fix Form.disable to work again on non-form elements.  Closes #6887.  [Mislav Marohnić]

* Fix an issue with String.prototype.endsWith.  Closes #7822.  [altblue]

*1.5.1_rc2* (March 12, 2007)

* Add a tab character via innerHTML to the selector whitespace test.  [Christophe Porteneuve]

* Add an attribution to YUI-Ext's DomQuery in selector.js.

* Make Element.extend work on IE for Nodes with the same ID that where discarded.  Closes #7497.  [Mislav Marohnić, Thomas Fuchs]

* Make Selector correctly extend the first element it returns on IE.  [Thomas Fuchs]

* Prevent a crash in Safari when using $A() on NodeList objects that contain text nodes.  [Thomas Fuchs]

* Fix Element.Methods.descendants() to properly extend elements on IE.  [Thomas Fuchs]

*1.5.1_rc1* (March 9, 2007)

* Fix readAttribute for IE7. [Andrew Dupont]

*1.5.1_rc0* (March 8, 2007)

* Merge the selector branch into trunk, bringing vast performance improvements, bug fixes, and near-complete CSS3 compliance to $$ and Selector.  Closes #7568.  [Andrew Dupont]
  Selector speed test: http://andrewdupont.net/test/double-dollar/

* Add support for JSON encoding and decoding.  Closes #7427.  [Tobie Langel]

* Fix double escaping of query parameters in Hash.prototype.toQueryString, and prevent Safari from iterating over shadowed properties when creating hashes.  Closes #7421.  [Tobie Langel, Mislav Marohnić]

* Fix simulated attribute reading for IE for "href", "src" and boolean attributes.  [Mislav Marohnić, Thomas Fuchs]

* Form.Element.disable() will now call blur(), removed blur() call from Form.Element.enable().  Closes #6034.  [tdd]

* Optimize document.getElementsByClassName and finalize DOM performance optimization refactoring.  Closes #6696.  [Mislav Marohnić]

* Fix an issue with serializing empty array inputs.  Closes #7516.  [stakadush, Mislav Marohnić]

* Add optional third parameter "camelized" to Element.setStyle, for optimized performance if style names are known to be camelCased.  [Thomas Fuchs]

* Fix a bug in the simulated hasAttribute for IE due to getAttributeNode sometimes returning null.  [sam]

* Optimize Element.getStyle and add new Element.getOpacity method. Special case IE and Opera getStyle methods.  Closes #7648.  [Tobie Langel, Thomas Fuchs]

* Optimize Element.setStyle and add new Element.setOpacity method, special case IE and Gecko opacity methods.  Closes #7585.  [savetheclocktower]

* Add unified Browser detection by providing Prototype.Browser.(IE|Gecko|WebKit|Opera) booleans.  Closes #6800.  [savetheclocktower]

* Add String.prototype.empty and String.prototype.blank (tests if empty or whitespace-only).  Closes #7016.  [Jonathan Viney, Thomas Fuchs]

* Update README to reflect new URLs, update LICENSE copyright years.  Closes #7426.  [Tobie Langel]

* Array.prototype.uniq optimization.  Closes #7417.  [Christophe Porteneuve]

* String.prototype.endsWith should not fail on multiple occurrences.  Closes #7416.  [Christophe Porteneuve]

* Add Form.Methods.request as a convenience method for serializing and submitting a form via Ajax.Request to the URL in the form's action attribute.  [sam]

  Options passed to request() are intelligently merged with the underlying Ajax.Request options:
  - If the form has a method attribute, its value is used for the Ajax.Request method option.  If a method option is passed to request(), it takes precedence over the form's method attribute.  If neither is specified, method defaults to "post".
  - Key/value pairs specified in the parameters option (either as a query string or as a hash) will be merged with (and take precedence over) the serialized form parameters.

* Fix $(form).serialize() in Safari and add support for extending specific tags to Element.addMethods.  Closes #7358.  [Andrew Dupont]

* Add String.prototype.startsWith, String.prototype.endsWith, and String.prototype.include.  Closes #7075.  [Tobie Langel]

* Improve performance of String.prototype.escapeHTML by using a cached div and text node.  Closes #6937.  [altblue]

* Make setStyle() with opacity: 0 in Internet Explorer work correctly.  [Thomas Fuchs]

* Form.Element.activate shouldn't raise an exception when the form or field is hidden.  [sam]

* Remove support for "throw $continue" in Enumerable.  Use "return" instead.  [sam]

* Update HEADER to reflect new URL.  [sam]

*1.5.0* (January 18, 2007)

* 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]