// Highlight an image on mouse over
function rollHi (img,layerName,win) {
	if (typeof win == "undefined") win = "main";
	if (is_nav && typeof layerName != "undefined" && layerName != "") {
		layerName = win + ".document." + layerName;
		var imgObject = getObject(img,layerName);
	} else {
		var imgObject = getObject(img,win)
	}
	var onImg = eval(win + "." + img + "R.src")
	if ((imgObject) && (onImg != "undefined") && (onImg)) {
	imgObject.src = onImg;
	}
}
// Set off image hilight on mouse out
function rollLow (img,layerName,win) {
	if (typeof win == "undefined") win = "main"
	if (is_nav && typeof layerName != "undefined"  && layerName != "") {
		layerName = win + ".document." + layerName
		var imgObject = getObject(img,layerName)
	} else {
		var imgObject = getObject(img,win)
	}
	
	var offImg = eval(win + "." + img + ".src")
	if ((imgObject) && (offImg != "undefined")) {
		imgObject.src = offImg;
	}
}