Passing a variable in Javascript

Hi all,

I have a css file as below:

[CODE]
treechildren::-moz-tree-cell(makeItBlue00FF00)
{
background-color: blue;
}

[/CODE]

I am using the following line to append the css style to a tree cell

prop.AppendElement(aserv.getAtom(“makeItBlue00FF00”));

Everything works great, however I now wish to pass the color as a variable from javascript- this way I do not need to declare several styles in the CSS file. How can I do this? How do I modify the style sheet and how do I modify the Js to pass the variable.

Thanks

Kind regards

Chris

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