function Close()
{		

	varLocation = window.frames["mainIframe"].location.href;
	fileName = "";
	
	indexFileExtension = varLocation.indexOf(".aspx");
  
	if (indexFileExtension != -1){
		urlAteArquivo = varLocation.substr(0,indexFileExtension);
		posUltimaBarra = urlAteArquivo.lastIndexOf("/");	
		if (posUltimaBarra != -1){		
			fileName = urlAteArquivo.substr(posUltimaBarra+1);
			fileName = fileName.toLowerCase();
		}
	}
	
	index1 = varLocation.indexOf("(") + 1;
  index2 = varLocation.indexOf(")");
  sessionID = varLocation.substr(index1, index2 - index1);
  
  if (fileName.length > 0){
		if(fileName != "login") {
		
		  //urlToCall = "./(" + sessionID + ")/Utils/Logout.aspx";
			urlToCall = "./Utils/Logout.aspx";
			
			
				janela=window.open('https://empty.com','End','type=fullWindow,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,copyhistory=no,width=0,height=0,top=2000000,left=2000000,maximized');
				//janela=window.open('./Utils/Empty.html','End','type=fullWindow,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,copyhistory=no,width=0,height=0,top=2000000,left=2000000,maximized');
				//janela = window.open("./Utils/Empty.html",'End','toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,width=280,height=160'); 

        // url de logout
        document.forms[0].action = urlToCall;
				//window.frames["mainIframe"].document.forms[0].action = urlToCall;
				
				// Nova janela..
				document.forms[0].target = 'End';
				//window.frames["mainIframe"].document.forms[0].target = 'End';
				
				// Campo hidden que seta a janela para auto-fechar
				document.forms[0].Close.value = 'true';
				
				// Muda-se o nome do campo hidden viewstate para evitar que a próxima página
				// pense que é um postback e invalide a requisição por desconhecer o viewstate
				document.forms[0].__VIEWSTATE.name = 'NOVIEWSTATE';
				//window.frames["mainIframe"].document.forms[0].__VIEWSTATE.name = 'NOVIEWSTATE';
				
				document.forms[0].submit();
			  //window.frames["mainIframe"].document.forms[0].submit();
			  
			  this.focus();
		}
	}
}