function centerWindow(whatOption,winWidth,winHeight) 
			{
				window.open(whatOption,'optionWindow','toolbar=0,location=0,directories=0,status=1,menubar=1,scrollbars=1,resizable=1,width='+winWidth+',height='+winHeight);
			}

			function setStyle(menuItem)
			{
				isActive = true;
				menuItem.style.backgroundColor = "#3955A8";
				menuItem.style.fontWeight="bold";
			}

			function setDefault(menuItem)
			{
				isActive = false;
				menuItem.style.backgroundColor = "";
				menuItem.style.fontWeight = "";
			}