var EventX = null;
var EventY = null;
var TOGGLE_ELEMENT = '';
var bLoadUI = false;
// Objektinstanz
var objXMLHTTP;
var arSendQueue = new Array();
// -----------------------------------------------------------------------------
// | AJAX Kommando
// |	Command		= Befehl
// | 	CallBack	= R?ckgabefunktion
// |	Data		= Dateninhalt
function AJAXCommand(Command,CallBack,Data) {
	this.Command	= Command;
	this.CallBack	= CallBack;
	this.Data		= Data;
}

// -----------------------------------------------------------------------------
// | initialisiere die AJAX Komponente
function initAJAX() {
  if (window.ActiveXObject) {
    try {
      objXMLHTTP  = new ActiveXObject("Msxml2.XMLHTTP");
    } catch(e) {
      try {
        objXMLHTTP  = new ActiveXObject("Microsoft.XMLHTTP");
      } catch(e) {
        objXMLHTTP = false;
      }
    }
  } else if (window.XMLHttpRequest) {
    try {
       objXMLHTTP = new XMLHttpRequest();
    } catch (e) {
       objXMLHTTP = false;
    }
 }
}

// -----------------------------------------------------------------------------
// | arbeitet die Sendequeue ab
// |
function sendQueue() {
	self.status = 'In der Queue sind '+arSendQueue.length+' Elemente.';
	for (i=arSendQueue.length;i>0;i--) {
		var oCmd = arSendQueue[i-1];
		var stPost = "&command="+escape(oCmd.Command);
		//Senden
		sDispatcher = location.href;
		sDispatcher = sDispatcher.replace(".php",".ajaxdispatcher.php");
		
		objXMLHTTP.open("POST", sDispatcher, true);        
		objXMLHTTP.setRequestHeader("Method", "POST " + sDispatcher + " HTTP/1.1");
		objXMLHTTP.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		stPost+="&data="+escape(oCmd.Data);
		objXMLHTTP.onreadystatechange= function() {
			self.status = 'Ready-State: '+objXMLHTTP.readyState;
			if (objXMLHTTP.readyState==4) {
				if (objXMLHTTP.status == 200) {
					self.status = 'Status: '+objXMLHTTP.status;
					toggleInfoContainer(false);
					eval("oCmd.CallBack();");
				}
			} else 
			return;
		}
		stPost = stPost.replace(/\+/g,escape("+"));
		objXMLHTTP.send(stPost);   
		toggleInfoContainer(true);
		
		//Eintrag aus Queue l?schen
		delete oCmd;
		if (arSendQueue.length > 1)
			arSendQueue.length = arSendQueue.length -1;
		else
			arSendQueue = new Array();
	}
	window.setTimeout("sendQueue()",2000);
}
// -----------------------------------------------------------------------------
// | Debug
function vd(obj) {
	st = "";
	if (obj == undefined) {
		alert('obj ist undefined');
		return;
	}
	for (i in obj)
		st+=i + " = " + obj[i] + "\n";
	alert(st);
}

function trim_ (zeichenkette) {
  // Erst führende, dann Abschließende Whitespaces entfernen
  // und das Ergebnis dieser Operationen zurückliefern
  return zeichenkette.replace (/^\s+/, '').replace (/\s+$/, '');
}

function toggleInfoContainer(bVisible) {
	var obj = document.getElementById('AJAX_Container');
	if (obj==null) return false;


	var oElement; 
	if (TOGGLE_ELEMENT!='') {
		oElement = document.getElementById(TOGGLE_ELEMENT);
	}
	if (oElement!=undefined) {
		iHeight = oElement.style.height;
		iLeft   = oElement.style.left + 300;
		iWidth  = oElement.style.width;
		iTop    = oElement.style.top+100;
	} else if (EventX!=null) {
		iHeight = 40;
		iLeft   = EventX-200;
		iWidth  = 300;
		iTop    = EventY;	
	} else {
		iHeight = 40;
		iLeft   = 250;
		iWidth  = 300;
		iTop    = 300;
	}
	obj.style.height = iHeight;
	obj.style.left   = iLeft;
	obj.style.width  = iWidth;
	obj.style.top    = iTop;	
	obj.style.display = (bVisible ? 'block' : 'none');
	TOGGLE_ELEMENT = '';
}