function chkFormular()
{
 if(document.Formular.Vorname_an.value == "")
  {
   alert("Please enter the first name!");
   document.Formular.Vorname_an.focus();
   return false;
  }
 if(document.Formular.Nachname_an.value == "")
  {
   alert("Please enter the surename!");
   document.Formular.Nachname_an.focus();
   return false;
  }
 if(document.Formular.Adresse_an.value == "")
  {
   alert("Please enter the adresse!");
   document.Formular.Adresse_an.focus();
   return false;
  }
 if(document.Formular.Land_an.value == "")
  {
   alert("Please enter the country!");
   document.Formular.Land_an.focus();
   return false;
  }
 if(document.Formular.PLZ_an.value == "")
  {
   alert("Please enter the postal code!");
   document.Formular.PLZ_an.focus();
   return false;
  }
 if(document.Formular.Ort_an.value == "")
  {
   alert("Please enter the town!");
   document.Formular.Ort_an.focus();
   return false;
  }
 if(document.Formular.Vorname_rg.value == "")
  {
   alert("Please enter your first name!");
   document.Formular.Vorname_rg.focus();
   return false;
  }
 if(document.Formular.Nachname_rg.value == "")
  {
   alert("Please enter your surename!");
   document.Formular.Nachname_rg.focus();
   return false;
  }
 if(document.Formular.Adresse_rg.value == "")
  {
   alert("Please enter your adress!");
   document.Formular.Adresse_rg.focus();
   return false;
  }
 if(document.Formular.Land_rg.value == "")
  {
   alert("Please enter your country!");
   document.Formular.Land_rg.focus();
   return false;
  }
 if(document.Formular.PLZ_rg.value == "")
  {
   alert("Please enter your postalcode!");
   document.Formular.PLZ_rg.focus();
   return false;
  }
 if(document.Formular.Ort_rg.value == "")
  {
   alert("Please enter your town!");
   document.Formular.Ort_rg.focus();
   return false;
  }
 if(document.Formular.email.value == "")
  {
   alert("Please enter your email!");
   document.Formular.email.focus();
   return false;
  }
      if(document.Formular.email.value.indexOf('@') == -1)
  {
   alert("No valid email!");
   document.Formular.email.focus();
   return false;

  }
if(document.Formular.Wert.value == "")
  {
   alert("Please enter the value you want to spend!");
   document.Formular.Wert.focus();
   return false;
  }
}