function KAjax()

{

	this.url="";

	this.params="";

	this.method="GET";

	this.onError=function(msg)

	{

		alert(msg);

	};

	this.onSuccess=null;

}



function getXMLHttpRequest()

{

	if (window.XMLHttpRequest)

	{

		return new XMLHttpRequest();

	}

	else

	{

		if (window.ActiveXObject)

		{

			try

			{

				return new ActiveXObject("Msxml2.XMLHTTP");

			}

			catch(e)

			{

				try

				{

					return new ActiveXObject("Microsoft.XMLHTTP");

				}

				catch(e)

				{

					return null;

				}

			}

		}

	}

	return null;

}



KAjax.prototype.doRequest=function()

{

	if (!this.url)

	{

		this.onError("Es wurde keine URL angegeben.");

		return false;

	}

	if (!this.method)

	{

		this.method="GET";

	}

	else

	{

		this.method=this.method.toUpperCase();

	}

	var _this=this;

	var xmlHttpRequest=getXMLHttpRequest();

	if (!xmlHttpRequest)

	{

		this.onError("Es konnte kein XMLHttpRequest erstellt werden.");

		return false;

	}

	switch(this.method)

	{

		case "GET":

			xmlHttpRequest.open(this.method,this.url+"?"+this.params,true);

			xmlHttpRequest.send(null);

			xmlHttpRequest.onreadystatechange=readyStateHandler;

			break;

		case "POST":

			xmlHttpRequest.open(this.method,this.url,true);

			xmlHttpRequest.setRequestHeader('Content-Type','application/x-www-form-urlencoded');

			xmlHttpRequest.send(this.params);

			xmlHttpRequest.onreadystatechange=readyStateHandler;

			break;

	}

	function readyStateHandler()

	{

		if (xmlHttpRequest.readystate < 4) return false;

		if (xmlHttpRequest.status == 200 || xmlHttpRequest.status == 304)

		{

			if (_this.onSuccess)

			{

				_this.onSuccess(xmlHttpRequest.responseText,xmlHttpRequest.responseXML);

			}

		}

		else

		{

			if (_this.onError)

			{

				_this.onError("["+xmlHttpRequest.status+" "+xmlHttpRequest.statusText+"] Es trat ein Fehler bei der Datenübertragung auf.");

			}

		}

	}

}