function $(id){
			return document.getElementById(id);
		}
		
		function menu_my(name,num) {
			var my;
			my = $(name);
			
			if ( my.last == undefined ) {
				my.last = 1;
			}
			var menu = $("menu" + name + my.last);
			var cont = $("cont" + name + my.last);
			menu.className = "";
			cont.style.display = "none";
		
			var menu = $("menu" + name + num);
			var cont = $("cont" + name + num);
			menu.className = "selectd";
			cont.style.display = "block";
		
			my.last = num;

			}