function checkEntry()
{
   sendFlag = true;
   errorMld = "Sie verwenden Sonderzeichen!\nBitte geben Sie in den Eingabefeldern nur Buchstaben und Zahlen ein!";
   forbiddenCharacters = new Array("\\","\n","\t","|","<",">"," ","\"","\'","-","\@","~","+","#","°","^","!","§","$","%","&","/","(",")","=","?","´","`",",",";",".",":","*","€","ß","²","³","{","[","]","}");
   agbvar = "einverstanden";

   if(document.Formular.name.value.length < 3)
   {
	alert("Feld: Boardname\n\nFeld muss mindestens drei Zeichen haben!\n\n" + errorMld); document.Formular.name.focus(); sendFlag = false;
   }
   if(document.Formular.email.value.length < 8)
   {
	alert("Feld: EMail\n\nKeine gültige E-Mail-Adresse angegeben!\n\n" + errorMld); document.Formular.email.focus(); sendFlag = false;
   }

   for (i = 0 ; i < forbiddenCharacters.length ; i++ )
   {
   	if (document.Formular.name.value.indexOf(forbiddenCharacters[i]) > -1)
   	{
  		alert("Feld: Boardname\n\n" + errorMld); document.Formular.name.focus(); sendFlag = false; break;
   	}
   }

   if(document.Formular.email.value.indexOf('@') == -1)
   {
   	alert("Keine gültige E-Mail-Adresse angegeben!");
   	document.Formular.email.focus();
   	sendFlag = false;
    }

   if(document.Formular.agb.value != agbvar)
   {
   	alert("Sie müssen die Teilnahmeregeln akzeptieren indem Sie \"einverstanden\" eingeben.");
   	document.Formular.agb.focus();
   	sendFlag = false;
    }

   if ( sendFlag ) return true; else return false;
}