function showstop() 
{
  newWindow = window.open('','','menubar=0,resizable=0,status=0,locations=0,directories=0,toolbar=0,scrollbars=1,width=600,height=400,left=200,top=100');     
  newWindow.focus;      
  newWindow.location='http://mify.com/config/checkuser.asp?logout=1';  
}