var numMenus = 5;
var timer = 0;

function show(obj, id) {
	hideAll(obj);
	document.getElementById("popup" + id).style.visibility = "visible";
	obj.className = "hover";
}

function hideAll(obj) {
	for (var i = 1; i <= numMenus; i++) {
		document.getElementById("popup" + i).style.visibility = "hidden";
		document.getElementById("a" + i).className = "";
	}
}

function setHideTimer() {
	timer = setTimeout("hideAll()", 750);	
}

function resetHideTimer() {
	clearTimeout(timer);
}