image rollover effect on mouseover help please.

[plutoniumman]

I found how to do on javascriptkit.com once before, now I can't find it!
so if you know how can you please post it?

[lavalamp]

Here's an example of CSS and JavaScript rollovers. Personally I'd go for the CSS rollover since then people with JavaScript disabled can still see the effect, but I think that your probably going to go for the JavaScript one. The JavaScript one needs less code and can be done inline in two event handlers so it's less hassle.