function getObj(id) {
     var obj = null;
     if (document.all) { obj = eval('document.all.' + id);}
     else { obj = document.getElementById(id); }
     return obj;
}

function MMenu(obj1, obj2) {
	if (getObj(obj1).style.display != "none") {
		getObj(obj1).style.display = "none";
		getObj(obj2).style.background = "none";
	}
	else {
		getObj(obj1).style.display = "block"
		getObj(obj2).style.background = "url(images/a_hover.gif) #c31217 no-repeat top center";
	}
}