function stopError() 
             {
                  return true;
             }
window.onerror = stopError;

function topTest()
{
      if (!top.onlinereserveren)
          {
               var newURL = "http://goedkope-hotels.nl/"+"?"+self.location.href;
    if ( document.images ) 
                              top.location.replace(newURL);
    else  top.location.href=newURL;
          }
}
topTest();