abgeschickt=0;

function SetFocus()
{
   document.kontakt.Name.focus();
   return;
}

function Eingabepruefen()
{
   if (document.kontakt.Name.value == "")
   {
      alert("Please enter your name!");
      document.kontakt.Name.focus();
   }
   else if (document.kontakt.Ort.value == "") 
   {
      alert("Please enter your postal address!"); 
      document.kontakt.Ort.focus()
   }
   else if (document.kontakt.EMail.value == "")
   {
      alert("Please enter your email address!");
      document.kontakt.EMail.focus()
   }
   else if (document.kontakt.EMail.value.indexOf('@', 0) == -1)
   {
      alert("Your email address is not correct!");
      document.kontakt.EMail.focus();
      document.kontakt.EMail.select()
   }
   else if (document.kontakt.Text.value == "Place your message here...")
   {
      alert("Your message is empty, please fill in a message");
      document.kontakt.Text.focus();
      document.kontakt.Text.select()
   }
   else if (document.kontakt.nospam.value != "2")
   {
      alert("Please ensure that this is no SPAM by typing in the number 2 in the SPAM-protection field.");
   }
   else
   {
      if (abgeschickt==0)
      {
         abgeschickt=1;
         document.kontakt.submit();
      }
      else
      {
         alert("Your message has already been sent!");
      }
   }
}