Banner problem

Hi
i would like to make random banner system but the problem is my homepage is not on html

so is there any way that i can put banner code is CSS stylesheet and whats the code for it

will this work in CSS

Code:

<script language="JavaScript"><!--

//Javascript Created by Anime7 http://anime7.org

//store the quotations in arrays

images = new Array(5);

images[0] = "<a href = 'url of site or link'><img src='url of image'></a>";

images[1] = "<a href = 'url of site or link'><img src='url of image'></a>";

images[2] = "<a href = 'url of site or link'><img src='url of image'></a>";

images[3] = "<a href = 'url of site or link'><img src='url of image'></a>";

images[4] = "<a href = 'url of site or link'><img src='url of image'></a>";

index = Math.floor(Math.random() * images.length);

document.write(images[index]);

//done

// --></script>

anyone ? please

dump....

come on ... i really want random banner thing

i want to add it in CSS stylesheet what should i do ??

well.... ?