function thisMovie(movieName) 
{
	try
    {
		if (navigator.appName.indexOf("Microsoft") != -1) 
		{
			 return window[movieName];
		} 
		else if (navigator.appName.indexOf("Netscape") != -1) 
		{
	 		return document[movieName];
		}
		else 
		{
	 		return document[movieName];
		}
    }
	catch(e)
    {
		alert(e);
    }	
}
 
window.onbeforeunload = function(e) 
{ 
	thisMovie("index").windowUnload();
	//return "Saving Map State..."; 
}