var rollArr=new Array();
function setrollover(OverImgSrc,pageImageName)
{
if (! document.images)return;
if (pageImageName == null)
    pageImageName = document.images[document.images.length-1].name;
rollArr[pageImageName]=new Object;
rollArr[pageImageName].overImg = new Image;
rollArr[pageImageName].overImg.src=OverImgSrc;
}

function rollover(ImgName,ImgOver)
{
	if (! document.images)return;
	if (! rollArr[ImgName])
	{
		rollArr[ImgName]=new Object;
		rollArr[ImgName].overImg = new Image;
		rollArr[ImgName].overImg.src=ImgOver;
		rollArr[ImgName].outImg = new Image;
		rollArr[ImgName].outImg.src = document.images[ImgName].src;
	}
	
		document.images[ImgName].src=rollArr[ImgName].overImg.src;
}

function rollout(ImgName)
{
	if (! document.images)return;
	if (! rollArr[ImgName])return;

		document.images[ImgName].src=rollArr[ImgName].outImg.src;
}