function GetXmlHttpObject()
{
  var xmlHttp=null;
  try
    {
    // Firefox, Opera 8.0+, Safari
    xmlHttp=new XMLHttpRequest();
    }
  catch (e)
    {
    // Internet Explorer
    try
      {
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      }
    catch (e)
      {
      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
    }
  if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return false;
  }  
  return xmlHttp;
}

function mailverzeichnis_eintragen() {
xmlHttp=GetXmlHttpObject();

		var name = document.getElementById("name").value;
		var jahrgang = document.getElementById("jahrgang").value;		
		var www = document.getElementById("www").value;		
		var email = document.getElementById("email").value;	
   
    xmlHttp.open("POST",'includes/ajax.php?action=mailverzeichnis_eintragen',true);
    xmlHttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
    xmlHttp.send('name='+name+'&jahrgang='+jahrgang+'&www='+www+'&email='+email);
    
    document.getElementById('meldungdiv').innerHTML = "Bitte warten...";
    
      xmlHttp.onreadystatechange=function()
      {
      if(xmlHttp.readyState==4)
      	document.getElementById('meldungdiv').innerHTML = xmlHttp.responseText;      
      }

document.getElementById('eintragendiv').style.display='none';
}

function mailverzeichnis_change() {
xmlHttp=GetXmlHttpObject();

		var eintragid = document.getElementById("eintrag_id").value;
		var art = document.getElementById("edit_del_submit").value;
		
		var name = document.getElementById("edit_name").value;
		var jahrgang = document.getElementById("edit_jahrgang").value;		
		var www = document.getElementById("edit_www").value;		
		var email = document.getElementById("edit_email").value;	
   
    xmlHttp.open("POST",'includes/ajax.php?action=mailverzeichnis_change',true);
    xmlHttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
    xmlHttp.send('id='+eintragid+'&art='+art+'&name='+name+'&jahrgang='+jahrgang+'&www='+www+'&email='+email);

		document.getElementById('meldungdiv').innerHTML = "Bitte warten...";

      xmlHttp.onreadystatechange=function()
      {
      if(xmlHttp.readyState==4)
      	document.getElementById('meldungdiv').innerHTML = xmlHttp.responseText;      
      }

document.getElementById('eintragendiv').style.display='none';
}

function mailverzeichnis_anzeigen() {
xmlHttp=GetXmlHttpObject();

		var abijahrgang = document.getElementById("jahrgang_anzeigen").value;
   
    xmlHttp.open("POST",'includes/ajax.php?action=mailverzeichnis_anzeigen',true);
    xmlHttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
    xmlHttp.send('jahrgang='+abijahrgang);
  
  	document.getElementById('anzeigediv').innerHTML = "<img src=\"images/icon_wait.gif\" alt=\"loading...\" /> Bitte warten...";
        
    xmlHttp.onreadystatechange=function()
      {
      if(xmlHttp.readyState==4)
      	document.getElementById('anzeigediv').innerHTML = xmlHttp.responseText;      
      }
}

function mailverzeichnis_anzeigen_admin() {
xmlHttp=GetXmlHttpObject();
   
    xmlHttp.open("GET",'includes/ajax.php?action=mailverzeichnis_anzeigen_admin',true);
    xmlHttp.send(null);
            
    xmlHttp.onreadystatechange=function()
      {
      if(xmlHttp.readyState==4)
      	document.getElementById('mailverzeichnis_admin').innerHTML = xmlHttp.responseText;      
      }
}


function mailverzeichnis_admin(uid,check) {
xmlHttp=GetXmlHttpObject();
   
    xmlHttp.open("POST",'includes/ajax.php?action=mailverzeichnis_admin',true);
    xmlHttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
    xmlHttp.send('uid='+uid+'&check='+check);
            
    xmlHttp.onreadystatechange=function()
      {
      if(xmlHttp.readyState==4)
      	mailverzeichnis_anzeigen_admin();
      }
}


function kursprojekt_img_del(bildid) {
xmlHttp=GetXmlHttpObject();
      xmlHttp.open("GET",'includes/ajax.php?action=kursprojekt_img_del&id='+bildid,true);
      xmlHttp.send(null);
  document.getElementById(bildid+'_del').value = 1;  
	document.getElementById('img_'+bildid).style.display = 'none';
}


function galerie_img_del(bildid) {
xmlHttp=GetXmlHttpObject();
      xmlHttp.open("GET",'includes/ajax.php?action=galerie_img_del&id='+bildid,true);
      xmlHttp.send(null);
  document.getElementById(bildid+'_del').value = 1;  
	document.getElementById('img_'+bildid).style.display = 'none';
}