prototype: Fix Element#writeAttribute to work with 'cellspacing' and 'cellpadding' attributes in IE. Closes #9983.

CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Fix Element#writeAttribute to work with 'cellspacing' and 'cellpadding' attributes in IE. Closes #9983. [/dev/urandom, Tobie Langel]
+
 * Prevent a potential security issue for cross-site ajax requests. [Alexey Feldgendler, sam, Tobie Langel]
 
 * Test for attribute existence before applying more complex CSS3 selectors. Closes #10870. [arty, Tobie Langel]

src/dom.js

@@ -799,7 +799,10 @@ else if (Prototype.Browser.IE) {
   };
   
   Element._attributeTranslations.write = {
-    names: Object.clone(Element._attributeTranslations.read.names),
+    names: Object.extend({
+      cellpadding: 'cellPadding',
+      cellspacing: 'cellSpacing'
+    }, Element._attributeTranslations.read.names),
     values: {
       checked: function(element, value) {
         element.checked = !!value;

test/unit/dom.html

@@ -281,7 +281,7 @@
   </select>
 </form>
 
-<table id="write_attribute_table">
+<table id="write_attribute_table" cellpadding="6" cellspacing="4">
   <tr><td id="write_attribute_td">A</td><td>B</td></tr>
   <tr><td>C</td></tr>
   <tr><td>D</td><td>E</td><td>F</td></tr>
@@ -1313,6 +1313,10 @@
       var elements = $('custom_attributes').immediateDescendants();
       assertEnumEqual(['1', '2'], elements.invoke('readAttribute', 'foo'));
       assertEnumEqual(['2', null], elements.invoke('readAttribute', 'bar'));
+
+      var table = $('write_attribute_table');
+      assertEqual('4', table.readAttribute('cellspacing'));
+      assertEqual('6', table.readAttribute('cellpadding'));
     }},
     
     testElementWriteAttribute: function() {with(this) {
@@ -1363,6 +1367,12 @@
       assertEqual('some-other-id',  label.writeAttribute({htmlFor:   'some-other-id'}). readAttribute('for'));
       
       assert(p.writeAttribute({style: 'width: 5px;'}).readAttribute('style').toLowerCase().include('width'));      
+
+      var table = $('write_attribute_table');
+      table.writeAttribute('cellspacing', '2')
+      table.writeAttribute('cellpadding', '3')
+      assertEqual('2', table.readAttribute('cellspacing'));
+      assertEqual('3', table.readAttribute('cellpadding'));
     }},
     
     testElementWriteAttributeWithCustom: function() {with(this) {