function toggle(submenu) {
 if (document.getElementById(submenu).style.display == "none")
	 document.getElementById(submenu).style.display = "block";
 else if (document.getElementById(submenu).style.display == "block")
 	 document.getElementById(submenu).style.display = "none"
 else alert("An error occured in the menu. Contact the web master.");
}

function collapseAll(objs) {
var i;
for (i=0;i<objs.length;i++ ) {
objs[i].style.display = 'none';
}
}
function pageLoad() {
collapseAll($('submenu1','submenu2','submenu3'));
}
addEvent(window,'load',pageLoad);