#139 Expose the computed style of elements

[Simon Stewart]

It would be extremely useful if HtmlUnit exposed computed and/or effective "style" information for DomNodes. This functionality is currently implemented in webdriver as a chunk of evaluated Javascript, which is similar to Selenium's mechanism:

http://code.google.com/p/webdriver/source/browse/trunk/htmlunit/src/java/org/openqa/selenium/htmlunit/RenderedHtmlUnitDriverWebElement.java#120

This is obviously a sub-optimal solution: ideally HtmlUnit would make it easy to extract this information somehow.