/*	PURPOSE:  Swap an image onMouseOver or onMouseOut.
	imgName: NAME attribute of an IMG tag to be swapped.
	sSrc: string path to the image to become the image source.
*/
function rollImage(imgName, sSrc)
{
	if(document.images){
		var objImg = eval(document.images[imgName])
		objImg.src = sSrc;
	}
}