[PATCH] Make Element.getStyle work with camelized string parameter

Sorry for the typos and unclear statements above.

Here it an better expanation:

Element.geStyle relies on getPropertyValueto return styles that have been set via a stylesheet.

Unfortunately getPropertyValuedoes not accept camelized strings.

Therefore the following will yield an incorrect result:

$(element).getStyle('fontSize');

Idealy, Element.getStyle should be able to handle both camelized and non-camelized string.

As per W3C DOM CSS:

"The CSS2Properties interface represents a convenience mechanism for retrieving and setting properties within a CSSStyleDeclaration. Getting an attribute of this interface is equivalent to calling the getPropertyValue method of the CSSStyleDeclaration interface".

Thus the following are equivalent:

css.getPropertyValue(style)
css[style.camelize()]

As we already have a camelized version of the style, it is faster to use the second method rather than to do:

css.getPropertyValue(style.underscore().dasherize())

It has been tested and works in Opera 9, Safari 2 & Firefox 1.5

js + tests

Good work Tobie!

Now I'll try to be smart about this in #6696, too.

(In [5659]) Prototype: make Element.getStyle() work with camelCased argument, fixes #6686 [Tobie]