function menu_onmouseover(item,expand,child,desc) {
	if (expand=="0") {
		if (child!=null) {
			document.getElementById(item).style.visibility="hidden"
			document.getElementById(child).style.visibility="visible";
			document.getElementById(desc).style.visibility="visible";
		}
		}
	else {
		document.getElementById(item).style.visibility="hidden"
		document.getElementById(child).style.visibility="visible";
		document.getElementById(desc).style.visibility="visible";
	}
}

function menu_onmouseout(item,expand,child,desc) {
	if (expand=="0") {
		if (child!=null) {
		 	document.getElementById(item).style.visibility="visible"
			document.getElementById(child).style.visibility="hidden";
			document.getElementById(desc).style.visibility="hidden";
		}
		}
	else {
	 	document.getElementById(item).style.visibility="visible"
		document.getElementById(child).style.visibility="hidden";
		document.getElementById(desc).style.visibility="hidden";
	}
}

function overlay_onclick() {

			document.getElementById("overlay").style.visibility="hidden";
			document.getElementById("overlayV").style.visibility="hidden";

}