function MG2Aus() {
 if(document.getElementById)
   document.getElementById("MG2").style.display = "none";
}
function MG2An() {
 if(document.getElementById)
   document.getElementById("MG2").style.display = "block";
}
function DetailsAn() {
 if(document.getElementById)
   document.getElementById("MG1").style.display = "block";
 if(document.getElementById)
   document.getElementById("Details").style.display = "block";
}
function DetailsAus() {
 if(document.getElementById)
   document.getElementById("MG1").style.display = "none";
 if(document.getElementById)
   document.getElementById("MG2").style.display = "none";
 if(document.getElementById)
   document.getElementById("Details").style.display = "none";
}

function chkFormular(){

 if(document.Formular.Firma.value == "") {
   document.Formular.Firma.focus();
   if(document.getElementById) document.getElementById("*Firma").style.display = "none";
   if(document.getElementById) document.getElementById("pflicht").style.color = "red";
   if(document.getElementById) document.getElementById("pFirma").style.display = "inline";
   document.Formular.Firma.style.backgroundColor = "#FFD700";
   return false;
 } else {
   document.Formular.Firma.style.backgroundColor = "#FFFFCE";
   if(document.getElementById) document.getElementById("pflicht").style.color = "gray";
   if(document.getElementById) document.getElementById("pFirma").style.display = "none";
 }


 if(document.Formular.Name.value == "") {
   document.Formular.Name.focus();
   if(document.getElementById) document.getElementById("*Name").style.display = "none";
   if(document.getElementById) document.getElementById("pflicht").style.color = "red";
   if(document.getElementById) document.getElementById("pName").style.display = "inline";
   document.Formular.Name.style.backgroundColor = "#FFD700";
   return false;
 } else {
   document.Formular.Name.style.backgroundColor = "#FFFFCE";
   if(document.getElementById) document.getElementById("pflicht").style.color = "gray";
   if(document.getElementById) document.getElementById("pName").style.display = "none";
 }
 if(document.Formular.mailfrom.value == "")  {
   document.Formular.mailfrom.focus();
   if(document.getElementById) document.getElementById("*mailfrom").style.display = "none";
   if(document.getElementById) document.getElementById("pflicht").style.color = "red";
   if(document.getElementById) document.getElementById("pmailfrom").style.display = "inline";
   document.Formular.mailfrom.style.backgroundColor = "#FFD700";
   return false;
  }else {
   if(document.getElementById) document.getElementById("pflicht").style.color = "gray";
   if(document.getElementById) document.getElementById("pmailfrom").style.display = "none";
   document.Formular.mailfrom.style.backgroundColor = "#FFFFCE";
 }
 if(document.Formular.mailfrom.value.indexOf('@') == -1) {
   document.Formular.mailfrom.focus();
   if(document.getElementById) document.getElementById("pflicht").style.color = "red";
   if(document.getElementById) document.getElementById("*mailfrom").style.display = "none";
   if(document.getElementById) document.getElementById("pNomailfrom").style.display = "inline";
   document.Formular.mailfrom.style.backgroundColor = "#FFD700";
   return false;
  }else {
   document.Formular.mailfrom.style.backgroundColor = "#FFFFCE";
   if(document.getElementById) document.getElementById("pflicht").style.color = "gray";
   if(document.getElementById) document.getElementById("pNomailfrom").style.display = "none";
 }
 if(document.Formular.Tel.value == "") {
   if(document.getElementById) document.getElementById("pflicht").style.color = "red";
   if(document.getElementById) document.getElementById("*Tel").style.display = "none";
   if(document.getElementById) document.getElementById("pTel").style.display = "inline";
   document.Formular.Tel.style.backgroundColor = "#FFD700";
   document.Formular.Tel.focus();
   return false;
  }else {
   document.Formular.Tel.style.backgroundColor = "#FFFFCE";
   if(document.getElementById) document.getElementById("pflicht").style.color = "gray";
   if(document.getElementById) document.getElementById("pTel").style.display = "none";
 }
}