function validateSearch( form )
{
  var messages = new Array();
  messages["en_US"] = "To perform a search you must enter at least one word!";
  messages["de_DE"] = "Für eine Suche müssen Sie mindestens ein Wort eingeben!";  

  if (form.words && form.words.value == ""){
    var locale = (form.locale && form.locale.value != "") ? form.locale.value : "en_US";
    
    if (messages[locale] == null){//even locale is defined we migt not have a localized message
        locale = "en_US";
    }
    
    alert( messages[locale] );
    return false;
  };
  
  return true;
}