//VARIABLE WHICH REFERENCES THE TIMER (USED TO STOP THE TIMER IF NECESSARY)
var timer;

//FUNCTION TO SHOW A MENU (OR HIDE ALL IF THE menu VARIABLE IS EMPTY
function ShowMenu(menu) {
	var openMenu = document.getElementById(menu);
	for(var i=1; i<=4; i++) {
		if(document.getElementById('Menu' + i)) {
			document.getElementById('Menu' + i).style.left = "-999em";
		}
	}
	if(openMenu) {
		clearTimeout(timer)
		openMenu.style.left = "223px";
	}
}

//FUNCTION TO HIDE ANY OPEN MENUS
function HideMenu() {
	timer = setTimeout('ShowMenu()',2000);
}