function showNav(itemName,left,top) {	
	showItem = document.getElementById(itemName);
	showItem.style.top = top;
	showItem.style.left = left;
	showItem.style.visibility="visible";
	}

function show(itemName) {		
	showItem = document.getElementById(itemName);
	showItem.style.visibility="visible";
	}

function hide(itemName) {
	hideItem = document.getElementById(itemName);
	hideItem.style.visibility="hidden";
}

function hideTimer(itemName) {
timer = setInterval("hide('"+itemName+"')",350);	
}

function openWindow(theURL,winName,features) {
  window.open(theURL,winName,features);
}