var found = "false";

function checkUpgrade()
{
  if(found == "true")
  {
    found = "true";
  }
  else
  {
    upgrade();
  }
}

function upgrade()
{
  window.open( "upgradeflash.html", 'upgrade', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=300,height=150,left=100,top=100');
}