function chkProdukte() {	

	var errfound = false;
	var errmsg = "";
// Checkbox, falls kein Produkt ausgewaehlt...	
if((document.Formular.sauter_1.checked == "")&&(document.Formular.sauter_2.checked == "")&&(document.Formular.hirschmann_1.checked == "")&&(document.Formular.lumberg_1.checked == "")&&(document.Formular.harting_1.checked == "")&&(document.Formular.harting_2.checked == "")&&(document.Formular.harting_3.checked == "")&&(document.Formular.harting_4.checked == "")&&(document.Formular.harting_5.checked == "")&&(document.Formular.harting_6.checked == "")&&(document.Formular.harting_7.checked == "")&&(document.Formular.escha_1.checked == "")&&(document.Formular.schlicker_1.checked == "")&&(document.Formular.hummel_1.checked == "")&&(document.Formular.hugro_1.checked == "")&&(document.Formular.hugro_2.checked == "")&&(document.Formular.leuze_1.checked == "")&&(document.Formular.leuze_2.checked == "")&&(document.Formular.leuze_3.checked == "")&&(document.Formular.gavazzi_1.checked == "")&&(document.Formular.hirschmannsks_1.checked == "")&&(document.Formular.bedea_1.checked == "")&&(document.Formular.bedea_2.checked == "")&&(document.Formular.bedea_3.checked == "")&&(document.Formular.bedea_4.checked == "")&&(document.Formular.bedea_5.checked == "")&&(document.Formular.bedea_6.checked == "")&&(document.Formular.bedea_7.checked == "")&&(document.Formular.bedea_8.checked == "")&&(document.Formular.busch_1.checked == ""))
	{ 
		errfound = true;
		errmsg = errmsg + "\rBitte markieren Sie mindestens ein Produkt.\r\n";
	}

	if (errfound == true) {
		alert(errmsg);
		return false;
	}
}