function doMouseOver(o)
{
	var objectId = o.id;
	var overFileName = "buttons/" + objectId + "Over.gif";
	document.images[objectId].src = overFileName;
}
function doMouseOut(o)
{
	var objectId = o.id;
	var outFileName = "buttons/" + objectId + ".gif"
	document.images[objectId].src = outFileName;	
}