function showSub(id){
	try{
		document.getElementById("div_"+id).style.display='';
		changeClass("menu_"+id, 'menu_item_ro');
		document.getElementById("div_"+id).style.marginLeft = document.getElementById("menu_"+id).offsetLeft -183;
	}catch(e){
		alert(e);
	}
}

function hideSub(id){
	try{
		document.getElementById("div_"+id).style.display='none';
		changeClass("menu_"+id, 'menu_item');
		}catch(e){}
}

function changeClass(Elem, myClass) {
	var elem;
	if(document.getElementById) {
		var elem = document.getElementById(Elem);
	} else if (document.all){
		var elem = document.all[Elem];
	}
	elem.className = myClass;
}

function iconChange(afb, url){
	document.getElementById(afb).src = url;
}