function disableEnterKey() {
	if (window.event.keyCode == 13)
		window.event.keyCode = 0;
	}

// Ermitteln des aktuellen Verzeichnisses
var pfad = location.pathname.split("/");
var curdir = pfad[pfad.length-2];
//alert(curdir);

// Setzen der sprachbezogenen Meldungen
if (curdir == "de") {
	all_fields_empty = "Alle Felder sind leer.";
	required_fields_empty = "Erforderliche Felder sind leer.";
	invalid_email = "Ungültige eMail-Adresse.";
	invalid_input = "Ungültige Eingabe.";
	}
else if (curdir == "en") {
	all_fields_empty = "All fields are empty.";
	required_fields_empty = "All required fields are empty.";
	invalid_email = "Invalid email address.";
	invalid_input = "Invalid input.";
	}
else if (curdir == "fr") {
	all_fields_empty = "Tous les champs sont vides.";
	required_fields_empty = "Tous les champs requis sont vides.";
	invalid_email = "Adresse email invalide.";
	invalid_input = "Saisie incorrecte";
	}
else {
	all_fields_empty = "Alle Felder sind leer.";
	required_fields_empty = "Erforderliche Felder sind leer.";
	invalid_email = "Ungültige eMail-Adresse.";
	invalid_input = "Ungültige Eingabe.";
	}



function checkform() {
	
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,6})+$/;

	if (document.kontaktform.nachname.value == "" && document.kontaktform.telefon.value == "" && document.kontaktform.email.value == "" && document.kontaktform.text.value == "") {
		alert(all_fields_empty);
		return false;
		}
	else if (document.kontaktform.nachname.value == "" || document.kontaktform.email.value == "" || document.kontaktform.text.value == "") {
		alert(required_fields_empty);
		return false;
		}
	else if (document.kontaktform.nachname.value == document.kontaktform.email.value) {
		alert(invalid_input);
		return false;
		}
	
	else if (!filter.test(document.kontaktform.email.value)) {
		alert(invalid_email);
		return false;
		}
	else
		return true;

	}