menu_need = 0;
menu_cur = 999;

function menu_mouse(num) {
	menu_need = num;
}

function menu_timer() {
	obj_m = document.getElementById('menu');
	obj_a = obj_m.getElementsByTagName('img');
	// document.getElementById('content').innerHTML = i1;
	for (var i1=0; i1<obj_a.length; i1++) {
		s1 = obj_a[i1].style.visibility;
		s2 = "hidden";
		if (i1==menu_need) { s2 = "visible"; }
		if (i1!=menu_cur) { 
			if (s1!=s2) {
				obj_a[i1].style.visibility = s2;
			}
		} else {
			obj_a[i1].style.visibility = "visible";
		}
	}
}