Javascript in CSS definition

hi,

is it possible to write that in CSS? Calling a javascript function for a rollover image. I have a multiple CSS website and the images are not the same in each template so I have to try to call them in CSS file.
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<script language="JavaScript">SecondImage00=image1.jpg';</script><a href="index.php" onMouseOver="{OrigImage00=img00.src; img00.src=SecondImage00} " onMouseOut="img00.src=OrigImage00"><img alt="" name="img00" border="0" src="image2" width="200" height="20" onLoad="TempImage00=new Image(0,0); TempImage00.src=SecondImage00"></a>

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Thanks

Roseline Paquin
Montréal, Canada