function openPopup(i, w, h) {
	window.open(i, 'popwin', 'width='+ w +',height='+ h);
	return false;
}

// Browser sniffing
var isDOM = (document.getElementById) ? 1:0;
var isIE4 = (document.all && !isDOM) ? 1:0;
var isNN4 = (document.layers) ? 1:0;

//Submenu array (since there's only one main menu that calls the others)
var theMenus = new Array('menuAboutetsc','menuPublications','menuEvents','menuProjects','menuEuenforcementpolicy','menuSeatbeltuse','menuDrinkdriving','menuSpeeding');

var mainmenutimeout = "";
var submenutimeout = "";
var activemenu = "";

function showHide(obj, state) {
if (state == "show") {
	if (isDOM) {
		document.getElementById(obj).style.visibility = "visible";
		}
	else if (isIE4) {
		document.all[obj].style.visibility = "visible";
		}
	else if (isNN4) {
		document.layers[obj].visibility = "visible";
		}
	}
else if (state == "hide") {
	if (isDOM) {
		document.getElementById(obj).style.visibility = "hidden";
		}
	else if (isIE4) {
		document.all[obj].style.visibility = "hidden";
		}
	else if (isNN4) {
		document.layers[obj].visibility = "hidden";
		}
	}
}

function menuControl(menu, action) {
activemenu = menu;
if (action == "show") {
	clearTimeout(submenutimeout);
	for (i=0;i!=theMenus.length;i++) {
		if (activemenu == theMenus[i]) {
			showHide(theMenus[i], 'show');
			}
		else {
			showHide(theMenus[i], 'hide');
			}
		}
	}
else if (action == "hide") {
	submenutimeout = setTimeout("showHide(activemenu, 'hide')", 1800);
	}
}

function hideAll() {
	 for (i=0;i!=theMenus.length;i++) {
		showHide(theMenus[i], 'hide');
		}
	}