function showMenu() {
	if (document.getElementById) {
		document.getElementById("navmenu").style.visibility="visible";
		document.getElementById("trigger").style.visibility="visible";
	}
}
function hideMenuNow() {
	if (document.getElementById) {
		document.getElementById("navmenu").style.visibility="hidden";
		document.getElementById("trigger").style.visibility="hidden";
	}
}
function hideMenu() {
	hideMenuNow();
}

function showSub(submenu,wrapper,item) { // action for menu items
	if(document.getElementById){
    timerRunning = false;
		var wrapperWidth = getWidth(wrapper);
		var wrapperPosX = offX(wrapper);
		var wrapperPosY = offY(wrapper);
		var itemPosY = offY(item);
		var halfwrapperWidth = wrapperWidth/2.5;
		var submenuX = wrapperPosX + halfwrapperWidth;
		var submenuY = wrapperPosY + itemPosY + 6;
		document.getElementById(submenu).style.top=submenuY + 'px';
		document.getElementById(submenu).style.left=submenuX + 'px';
		document.getElementById(submenu).style.visibility='visible';
	}
}

function clearAll() { // clear everything
	if(document.getElementById){
		clearSubs();
		hideMenu();		
 	}
}

function clearSubsNow() {
	if(document.getElementById) {
  	document.getElementById('GalleryGiftsSubMenu').style.visibility='hidden';
  	document.getElementById('ProductsSubMenu').style.visibility='hidden';
  	document.getElementById('SalesSubMenu').style.visibility='hidden';
  	document.getElementById('LoyaltySubMenu').style.visibility='hidden';
	}
}
	

function clearSubs() { // clear sub menus when a menu is open
	clearSubsNow();
}

function getWidth(elm) { // get the width of an element
	var x = document.getElementById(elm);
	return x.offsetWidth;
}

function offX(elm) { // get the x offset of an element from it's parent
	var x = document.getElementById(elm);
	return x.offsetLeft;
}

function offY(elm) { // get the y offset of an element from it's parent
	var x = document.getElementById(elm);
	return x.offsetTop;
}