//--------------------------------------------------------------------------
//TODO: Funktion in allen Dateien überflüssig machen, DefaultButton setzen
//Enterbutton blockieren
function pressEnter(value) {
            if(event.which || event.keyCode)
                {
                    if ((event.which == 13) || (event.keyCode == 13)) 
                    {
                            event.returnValue=false; 
                            event.cancel = true;
                    }
                } 
            else 
                {
                    return true;
                }
 }