var mypopup;
function callPopupAlert(URL,PARAMS) {
  try {
    mypopup = window.open(URL, "mypopup", PARAMS);
    if ( !mypopup || typeof(mypopup) != 'object' || mypopup.closed ) {
      throw "notopen"; 
    }
    mypopup.focus();
  } catch(e) {
    if ( e == "notopen" ) {
      window.location.href='../../../de/dialog/dialog/blocked.asp';
    }
  }
}