"Rollover images" are images that change when the mouse is over them. Rollover Images (or "rollovers" as we'll call them) are popular because they give the image a live feeling... they indicate that something will happen when you click on it.
Code:
<SCRIPT TYPE="text/javascript">
<!--
// copyright 1999 Idocs, Inc. http://www.idocs.com/tags/
// Distribute this script freely, but please keep this
// notice with the code.
var rollOverArr=new Array();
function setrollover(OverImgSrc,pageImageName)
{
if (! document.images)return;
if (pageImageName == null)
pageImageName = document.images[document.images.length-1].name;
rollOverArr[pageImageName]=new Object;
rollOverArr[pageImageName].overImg = new Image;
rollOverArr[pageImageName].overImg.src=OverImgSrc;
}
function rollover(pageImageName)
{
if (! document.images)return;
if (! rollOverArr[pageImageName])return;
if (! rollOverArr[pageImageName].outImg)
{
rollOverArr[pageImageName].outImg = new Image;
rollOverArr[pageImageName].outImg.src = document.images[pageImageName].src;
}
document.images[pageImageName].src=rollOverArr[pageImageName].overImg.src;
}
function rollout(pageImageName)
{
if (! document.images)return;
if (! rollOverArr[pageImageName])return;
document.images[pageImageName].src=rollOverArr[pageImageName].outImg.src;
}
//-->
</SCRIPT>