window.onload = function() {
if(document.getElementById("single")){
	var myMenu = document.getElementById("menu").getElementsByTagName("a");
	var Over  = "_on";
	var Off = "_off";
	var HrefList = new Array();
	for (var i = 0; i <myMenu.length; i++) {
		myMenu[i].onmouseover =function() {
			this.firstChild.src = this.firstChild.src.replace(Off,Over);
		}
		myMenu[i].onmouseout =function() {
			this.firstChild.src = this.firstChild.src.replace(Over,Off);
		}
	}
}
}