function FetchElement(id) {
	if (document.getElementById) {
		return document.getElementById(id);
	}
	else if (document.all) {
		return document.all[id];
	}
	else if (document.layers) {
		return document.layers[id];
	}
}

/* 
XHConn - Simple XMLHTTP Interface - bfults@gmail.com - 2005-04-08
Code licensed under Creative Commons Attribution-ShareAlike License
http://creativecommons.org/licenses/by-sa/2.0/
*/



function ajax() {
  var xmlhttp, bComplete = false;
  try { xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); }
  catch (e) { try { xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); }
  catch (e) { try { xmlhttp = new XMLHttpRequest(); }
  catch (e) { xmlhttp = false; }}}
  if (!xmlhttp) return null;
  this.connect = function(sURL, sMethod, sVars, fnDone)
  {
    if (!xmlhttp) return false;
    bComplete = false;
    sMethod = sMethod.toUpperCase();

    try {
      if (sMethod == "GET")
      {
        xmlhttp.open(sMethod, sURL+"?"+sVars, true);
        sVars = "";
      }
      else
      {
        xmlhttp.open(sMethod, sURL, true);
        xmlhttp.setRequestHeader("Method", "POST "+sURL+" HTTP/1.1");
        xmlhttp.setRequestHeader("Content-Type",
          "application/x-www-form-urlencoded");
      }
      xmlhttp.onreadystatechange = function(){
        if (xmlhttp.readyState == 4 && !bComplete)
        {
          bComplete = true;
          fnDone(xmlhttp);
        }};
      xmlhttp.send(sVars);
    }
    catch(z) { return false; }
    return true;
  };
  return this;
}

function loadap(id, land) {

	var myConn = new ajax();

	if (!myConn) {alert('Konnte keiner Verbindung aufbauen!');}

	var fnWhenDone = function (oXML) {

		var isIE = (navigator.appName.indexOf("Microsoft") !=-1);

		FetchElement(id+"_select").style.display = 'block';
		if (isIE) {
	    	FetchElement(id+"_select").innerHTML = oXML.responseText;
		}
		else {
			insertSelect(oXML.responseText, FetchElement(id+"_select"), id);
		}

	};

	myConn.connect("index.php", "GET", "action=add_ajax&name="+id+"&land="+escape(land), fnWhenDone);

}



function startap() {

	var myConn = new ajax();
	if (!myConn) {alert('Konnte keiner Verbindung aufbauen!');}
	var fnWhenDone = function (oXML) {
		isajax = oXML.responseText;
		if (isajax == "1") {
			var error = 0;
			var start_div = FetchElement("start_div");
			if (start_div != null && typeof start_div != 'undefined') {
				start_div.style.display = 'none';
			}
			else {
				error = 1;
			}
			var ziel_div = FetchElement("ziel_div");
			if (ziel_div != null && typeof ziel_div != 'undefined') {
				ziel_div.style.display = 'none';
			}
			else {
				error = 1;
			}
			var start_l = FetchElement("start_l");
			if (start_l != null && typeof start_l != 'undefined') {
				start_l.style.display = 'block';
			}
			else {
				error = 1;
			}
			var ziel_l = FetchElement("ziel_l");
			if (ziel_l != null && typeof ziel_l != 'undefined') {
				ziel_l.style.display = 'block';
			}
			else {
				error = 1;
			}
			var start_select2 = FetchElement("start_select2");
			if (start_select2 != null && typeof start_select2 != 'undefined') {
				start_select2.name = "start";
			}
			else {
				error = 1;
			}
			var ziel_select2 = FetchElement("ziel_select2");
			if (ziel_select2 != null && typeof ziel_select2 != 'undefined') {
				ziel_select2.name = "ziel";
			}
			else {
				error = 1;
			}
			var start_id = FetchElement("start_id");
			if (start_id != null && typeof start_id != 'undefined') {
				start_id.name = "start_id";
			}
			else {
				error = 1;
			}
			var ziel_id = FetchElement("ziel_id");
			if (ziel_id != null && typeof ziel_id != 'undefined') {
				ziel_id.name = "ziel_id";
			}
			else {
				error = 1;
			}
			if (error == 1) {
				location.reload();
			}
			loadap('ziel', '', '');
			loadap('start', '', '');
		}

	};
	myConn.connect("index.php", "GET", "action=check_ajax", fnWhenDone);

}


function insertSelect(myXHTML, myObject, id) {
	var parser = new DOMParser();
	var XMLdoc = parser.parseFromString(myXHTML, "application/xhtml+xml");
	var opt;
	var news = FetchElement(id+"_select2");
    var oChildren = news.getElementsByTagName('option');
    for (var i = 0; i < news.childNodes.length; i++) {
       news.removeChild(oChildren[i]);
    }
	// Hack: zweimal - keine ahnung wieso
    for (var i = 0; i < news.childNodes.length; i++) {
       news.removeChild(oChildren[i]);
    }
    var oChildren = XMLdoc.getElementsByTagName('option');
    for (var i = 0; i < oChildren.length; i++) {
	   opt = document.createElement("option");
	   opt.value = oChildren[i].getAttribute('value');
	   opt.text = oChildren[i].firstChild.data;
       news.appendChild(opt);
    }
}