var expandedMenuObj = null;

function expandMenu(objLI){
	if(expandedMenuObj != objLI){
		//if(expandedMenuObj)	expandedMenuObj.className = "";
		objs = objLI.parentNode.getElementsByTagName("LI");
		var n = objs.length;
		for(var i=0;i<n;i++){
			if(objs[i].className == 'on'){
				objs[i].className = '';
			}
		}
		expandedMenuObj = objLI;
		objLI.className = "on";
	}
}