Fix get style percentages opera
…ers. Specs pass in IE6/8/9, Opera, FireFox, Chrome, Safari. FireFox returns % for margins, hence a special matcher in the specs.
…h-child(last), (first) and (only). Added nth-last-child.
Fixes #2289 - use '' + value for values passed into setProperty
…, so .toString() methods are called when an object is passed.
Fixes Function.prototype.overloadGetter(usePlural), when it's called as getter('aa')
Remove opacity filter in IE if the opacity is 1.
Fix 2280 Fx Units
* Removes opera hack in Element.Style, apparently it isn't necessary anymore. All specs pass.
…turns % values. Fix by Dean Edwards http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
Fix #2266 - Calling setOpacity with null does not remove the style
…m in IE
This is the second part for using .setStyle('opacity', null); where the actual filter property is removed so it falls back to other CSS definitions.