// var localMainWin = null;

function GetWTMainWin(testWin)
	{
	try
		{
		/*if (localMainWin != null)
			{
			return localMainWin;
			}*/

		// Check optional param first
		if (typeof testWin == "undefined")
			{
			testWin = window;
			}

		// Check existance of Property WTMainWin
		if (typeof testWin.WTMainWin != "undefined")
			{
			/* localMainWin = testWin.WTMainWin;
			return localMainWin; */
			return testWin.WTMainWin;
			}

		// Walk up window link
		if (testWin.parent != testWin)
			{
			return GetWTMainWin(testWin.parent);
			}
		}

	catch (e)
		{
		// Avoid access violation 
		}

	return null;
	}

function guestlogin()
	{
 	document.getElementById("HUser").value     = document.getElementById("GuestUser").value;
 	document.getElementById("HPassword").value = document.getElementById("GuestPasswd").value;
	document.forms[0].submit();		  		
	}