// decrypt helper function
function decryptCharcode(n,start,end,offset)	{
	n = n + offset;
	if (offset > 0 && n > end)	{
		n = start + (n - end - 1);
	} else if (offset < 0 && n < start)	{
		n = end - (start - n - 1);
	}
	return String.fromCharCode(n);
}
	// decrypt string
function decryptString(enc,offset)	{
	var dec = "";
	var len = enc.length;
	for(var i=0; i < len; i++)	{
		var n = enc.charCodeAt(i);
		if (n >= 0x2B && n <= 0x3A)	{
			dec += decryptCharcode(n,0x2B,0x3A,offset);	// 0-9 . , - + / :
		} else if (n >= 0x40 && n <= 0x5A)	{
			dec += decryptCharcode(n,0x40,0x5A,offset);	// A-Z @
		} else if (n >= 0x61 && n <= 0x7A)	{
			dec += decryptCharcode(n,0x61,0x7A,offset);	// a-z
		} else {
			dec += enc.charAt(i);
		}
	}
	return dec;
}
	// decrypt spam-protected emails
function linkTo_UnCryptMailto(s)	{
	location.href = decryptString(s,-2);
}


 function checkform()
 {
   if (document.kontakt.vorname.value == "")
   {
     document.getElementById('errormsg').style.color = '#ff0000';
     document.getElementById('reg_firstname').style.color = '#ff0000';
     //alert("Please enter your first name!");
     document.kontakt.vorname.focus();
     return false;
   } else {
      document.getElementById('reg_firstname').style.color = '#808185';
   }
   
   if (document.kontakt.nachname.value == "")
   {
     document.getElementById('errormsg').style.color = '#ff0000';
     document.getElementById('reg_lastname').style.color = '#ff0000';
     //alert("Please enter your last name!");
     document.kontakt.nachname.focus();
     return false;
   } else {
      document.getElementById('reg_lastname').style.color = '#808185';
   }
   
     if (document.kontakt.email.value == "")
   {
     document.getElementById('errormsg').style.color = '#ff0000';
     document.getElementById('reg_email').style.color = '#ff0000';
     //alert("Please enter your job title !");
     document.kontakt.email.focus();
     return false;
   }    else {
      document.getElementById('reg_email').style.color = '#808185';
   }
   
      if (document.kontakt.strasse.value == "" || document.kontakt.strasse.value.indexOf("Unknown")!="-1"  )
   {
     document.getElementById('errormsg').style.color = '#ff0000';
     document.getElementById('reg_strasse').style.color = '#ff0000';
     //alert("Please enter your job title !");
     document.kontakt.strasse.focus();
     return false;
   }    else {
      document.getElementById('reg_strasse').style.color = '#808185';
   }
   
       if (document.kontakt.telefon.value == "" || document.kontakt.telefon.value.indexOf("Unknown")!="-1" )
   {
     document.getElementById('errormsg').style.color = '#ff0000';
     document.getElementById('reg_telefon').style.color = '#ff0000';
     //alert("Please enter your job title !");
     document.kontakt.telefon.focus();
     return false;
   }    else {
      document.getElementById('reg_telefon').style.color = '#808185';
   }
   
        if (document.kontakt.plz.value == "" || document.kontakt.plz.value.indexOf("Unknown")!="-1" )
   {
     document.getElementById('errormsg').style.color = '#ff0000';
     document.getElementById('reg_plz').style.color = '#ff0000';
     //alert("Please enter your job title !");
     document.kontakt.plz.focus();
     return false;
   }    else {
      document.getElementById('reg_plz').style.color = '#808185';
   }
   
      if (document.kontakt.ort.value == "" || document.kontakt.ort.value.indexOf("Unknown")!="-1" )
   {
     document.getElementById('errormsg').style.color = '#ff0000';
     document.getElementById('reg_ort').style.color = '#ff0000';
     //alert("Please enter your job title !");
     document.kontakt.ort.focus();
     return false;
   }    else {
      document.getElementById('reg_ort').style.color = '#808185';
   }
   
     if (document.kontakt.land.value == "" || document.kontakt.land.value.indexOf("Unknown")!="-1" )
   {
     document.getElementById('errormsg').style.color = '#ff0000';
     document.getElementById('reg_land').style.color = '#ff0000';
     document.kontakt.land.focus();
     return false;
   }    else {
      document.getElementById('reg_land').style.color = '#808185';
   }
   
  
    if (document.kontakt.message.value == "" || document.kontakt.message.value.indexOf("Unknown")!="-1"  || document.kontakt.message.value.indexOf("url=http:")!="-1" )
   {
     document.getElementById('errormsg').style.color = '#ff0000';
     document.getElementById('reg_message').style.color = '#ff0000';
     //alert("Please enter your job title !");
     document.kontakt.message.focus();
     return false;
   }    else {
      document.getElementById('reg_message').style.color = '#808185';
   }
   
   
  
   
 }