function validate_form(id) { 
  switch(id){
    case 'frmTerminabfrage': validate_code = "884f848s4efses4g8d4ghtr"; break;
    case 'frmKontaktformular': validate_code = "2349frew2ßr234jnfew2"; break;
  }
  
  window.document.forms[id].code.value = validate_code;
}

function mcode(name, domain, display) {
  displayed=(typeof(display)=="undefined") ? name+"@"+domain : display
  document.write('<a href=mailto:' + name + '@' + domain + '>' + displayed + '</a>');
}