/* UPDATED BY Marc Mignonsin 2009-04-29 */

function XMLLoader()
{
    this.xmlhttp = this.createXMLHTTP();
    this.setMethod('GET');

    if (!this.xmlhttp) return null;
}

XMLLoader.prototype.url;
XMLLoader.prototype.params;
XMLLoader.prototype.callBack;
XMLLoader.prototype.handlerObject;
XMLLoader.prototype.handlerFunction;
XMLLoader.prototype.handlerParams;
XMLLoader.prototype.xmlhttp;
XMLLoader.prototype.method;
XMLLoader.prototype.isComplete;

XMLLoader.prototype.createXMLHTTP = function()/*void*/
{
    this.clearParams();

    if (window.XMLHttpRequest)
    {
        return new XMLHttpRequest();
    }

    if (window.ActiveXObject)
    {
        var names = [
        "Msxml2.XMLHTTP.6.0",
        "Msxml2.XMLHTTP.3.0",
        "Msxml2.XMLHTTP",
        "Microsoft.XMLHTTP"
        ];

        for (var i in names)
        {
            try
            {
                return new ActiveXObject(names[i]);
            }
            catch(e)
            {
                
            }
        }

        return false;
    }

    alert("ERROR : unfortunately your browser does not support the XMLHTTPRequest object. Cannot exchange data using AJAX.");
/*
	this.clearParams();
	
	var xmlhttp;
	try 
	{ 
		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); 
	}
	catch (e) 
	{ 
		try 
		{ 
			xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); 
		}
		catch (e) 
		{ 
			try 
			{ 
				xmlhttp = new XMLHttpRequest(); 
			}
			catch (e) 
			{ 
				xmlhttp = false; 
			}
		}
	}
	return xmlhttp;*/
}

XMLLoader.prototype.clearParams = function()/*void*/
{
    this.params = '';
}

XMLLoader.prototype.addParam = function(key/*string*/,value/*string || number */)/*void*/
{
    //if(typeof(value) == "string") value = value.replace(/\+/g,"%2B");
    
    if (typeof(value) == "string") value = encodeURIComponent(value);

    (this.params == '') ? (this.params += key+'='+value) : (this.params += '&'+key+'='+value);
}

XMLLoader.prototype.setURL = function(url/*string*/)/*void*/
{
    this.url = url;
}

XMLLoader.prototype.addCallBack = function(o/*object*/,m/*string*/,p/*object*/)/*void*/
{
    if (o)
    {
        this.handlerObject = o;
    }
	
    if (m)
    {
        this.handlerFunction = m;
    }
	
    if (p)
    {
        this.handlerParams = p;
    }
}

XMLLoader.prototype.setMethod = function(m/*string GET || POST */)/*void*/
{
    m = m.toUpperCase();

    if (m != 'GET' && m != 'POST' )
    {
        alert('XMLLoader method must be "GET" or "POST" !')
    }
    else
    {
        this.method = m;
    }
}

XMLLoader.prototype.cancel = function()/*void*/
{
    if (this.xmlhttp != false)
    {
        this.xmlhttp.abort();
        this.xmlhttp = this.createXMLHTTP();
    }
}

XMLLoader.prototype.load = function()/*void*/
{
	
    if (!this.xmlhttp) return false;
	
    this.isComplete = false;
	
    try
    {
        if (this.method == "GET")
        {
            this.xmlhttp.open(this.method, this.url+"?"+this.params, true);
            this.params = "";
        }
        else
        {
            this.xmlhttp.open(this.method, this.url, true);
            this.xmlhttp.setRequestHeader("Method", "POST " + this.url + " HTTP/1.1");
            this.xmlhttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
        }
		
        var xmlLoader = this;
		
        this.xmlhttp.onreadystatechange = function()
        {	
			
            if (xmlLoader.xmlhttp.readyState == 4 && !xmlLoader.isComplete)
            {
                xmlLoader.isComplete = true;
				
                if (xmlLoader.xmlhttp.status != 200)
                {
                    //alert('ERROR : AJAX request failed (status code='+xmlLoader.xmlhttp.status+').');
                    return;
                }

                if (xmlLoader.handlerObject)
                {
                    xmlLoader.handlerObject[xmlLoader.handlerFunction](xmlLoader.xmlhttp, xmlLoader.handlerParams);
                }
                else if (xmlLoader.handlerFunction)
                {
                    xmlLoader.handlerFunction(xmlLoader.xmlhttp, xmlLoader.handlerParams);
                }
            }
        };
		
        this.xmlhttp.send(this.params);
    }
    catch(e)
    {
		
        return false;
    }
	
    return true;
}