function chkFormular()
{
 if(document.Formular.Vorname.value == "")
  {
   alert("Your first name please!");
   document.Formular.Vorname.focus();
   return false;
  }
 if(document.Formular.Nachname.value == "")
  {
   alert("Your surname name please!");
   document.Formular.Nachname.focus();
   return false;
  }
 if(document.Formular.Adresse.value == "")
  {
   alert("Your adress please!");
   document.Formular.Adresse.focus();
   return false;
  }
 if(document.Formular.PLZ.value == "")
  {
   alert("Your postal code please!");
   document.Formular.PLZ.focus();
   return false;
  }
 if(document.Formular.Ort.value == "")
  {
   alert("Your town please!");
   document.Formular.Ort.focus();
   return false;
  }
 if(document.Formular.Land.value == "")
  {
   alert("Your country please!");
   document.Formular.Land.focus();
   return false;
  }
 if(document.Formular.email.value == "")
  {
   alert("Your email please!");
   document.Formular.email.focus();
   return false;
  }
      if(document.Formular.email.value.indexOf('@') == -1)
  {
   alert("No valid email!");
   document.Formular.email.focus();
   return false;

  }
}