var http = null;
 
if(window.XMLHttpRequest){
 http = new XMLHttpRequest();
}
else if(window.ActiveXObject){
 http = new ActiveXObject("Microsoft.XMLHTTP");
}

function ladeSchulen(){
//alert('ll');
pl=document.forms[0].elements['plz_'].value  ;
form=document.forms[0].elements['form_'].value ;
a = document.forms[0].a_.value;

//alert("includes/schulliste.php?plz=" + pl + "&fo=" + form + "&a=" + a );
if(http!=null){
   http.open("GET","includes/schulliste.php?plz=" + pl + "&fo=" + form + "&a=" + a,true);
   http.onreadystatechange = ausgeben;
   http.send(null);
  } 
}
function ausgeben(){ 
if(http.readyState == 4){
  // alert(http.responseText);
   document.getElementById("schulliste").innerHTML =http.responseText;
  }
}
function senden(){ 
/*alert("scheisse");*/
document.katalog.submit();
 
}

function popup (url) {
 fenster = window.open(url, "Popupfenster", "width=450,height=300,resizable=yes");
 fenster.focus();
 return false;
}