Wordpress Javascript advertising background

[kirkout]

I need to add a Javascript advertisement as a background (skin) to a Wordpress site. The background image is included in the CSS so how do I change this for a Javascript code - any ideas please.....

[infinityspiral]

If you do NOT have jQuery this is probably what you want:
http://dev.opera.com/articles/view/d...ss-javascript/

If you DO have jQuery css manipulation is probably the quickest route:
http://api.jquery.com/css/