Lets say I have this CSS code:

<style type="text/css">
.list li
{
background-color: #E5AD41;
}
</style>

How would I let JavaScript change it to background-color: #83E553?

I am not wanting to change bgcolor where class is list, that is all Google brings me.

I'd recommend creating classes that you want to switch between and updating the className when you want to change the background color.

No, that really doesn't work. I'd like to be able to change everything in the CSS, not just couple of things. Ok, I guess this is maybe not possible.

It's possible, but there are compatibility issues.
http://msdn.microsoft.com/en-us/libr...71(VS.85).aspx
https://developer.mozilla.org/Es/DOM/Stylesheet_object
and you'll have to do some research, because last I heard it won't work in Safari, though I hope this has changed by now.

you can change the background of the list using that code also..

ul { background-image: url(pics/cssT/smallPic.jpg);
     background-repeat: repeat-y;
     color: green;
 }