var onImages=new Array();
function Rollover(imgName, imgSrc)
{
	onImages[imgName] = new Image();
	onImages[imgName].src = imgSrc;
}

function turnOn(imgName){ 
	document.images[imgName].offSrc = document.images[imgName].src;
	document.images[imgName].src = onImages[imgName].src;
}

function turnOff(imgName){ 
	document.images[imgName].src = document.images[imgName].offSrc;
}