function pruefen() {
 var res = true;
 var a = document.anfrage;
 if(a.name.value == '') {res = false;}
 if(a.plz.value == '') {res = false;}
 if(a.ort.value == '') {res = false;}
 if(a.telefon.value == '') {res = false;}
 if(a.datenschutz.checked == false) {res = false;}

 if(res == false){alert('Bitte alle Pflichtfelder ausfüllen!')} 
 return res;
}

function schliessen() {
	document.getElementById("pinfo").style.visibility="hidden";
}

function setFormValues() {
  document.anfrage.js.value = "true";
}