function SiteMenuOnMouseOver (evt) {
	var srcEl = SiteMenuOnMouseOverGetElementByEvt(evt);
	var src = srcEl.src;
	src = src.replace(/(.*\/.*)\.png/, "$1");
	src = src.replace(/RO$/, "");
	srcEl.src = src+"RO.png";
}

function SiteMenuOnMouseOut (evt) {
	var srcEl = SiteMenuOnMouseOverGetElementByEvt(evt);
	var src = srcEl.src;
	src = src.replace(/(.*\/.*)\.png/, "$1");
	src = src.replace(/RO$/, "");
	srcEl.src = src+".png";
}


function SiteMenuOnMouseOverGetElementByEvt (evt) {
	if ( (typeof(evt) == "undefined") || (evt == null) ) {
		evt = window.event;
	}
	var imgElement;
	if ( (typeof(evt.srcElement) == "undefined") || (evt.srcElement == null) ) {
		return evt.target;
	} else {
		return evt.srcElement;
	}
}