function create_http_object()
    {
        var ActiveXTypes = [
            "Microsoft.XMLHTTP",
            "MSXML2.XMLHTTP.5.0",
            "MSXML2.XMLHTTP.4.0",
            "MSXML2.XMLHTTP.3.0",
            "MSXML2.XMLHTTP"
        ];

        for( var i = 0; i < ActiveXTypes.length; i++ )
        {
            try
            {
                return new ActiveXObject( ActiveXTypes[i] );
            }
            catch( e )
            { }
        }

        try
        {
            return new XMLHttpRequest();
        }
        catch( e )
        { }

        return false;
    }

    function make_request(url, callback_function, http_method, post_values, return_xml)
    {
        http = create_http_object();

        if(!http)
        {
            alert('Je browser ondersteunt deze feature niet.');
            return false;
        }

        http.onreadystatechange = function()
        {
            if(http.readyState == 4)
            {
                if(http.status == 200)
                {
                    if(callback_function)
                    {
                        if(return_xml)
                        {
                            eval(callback_function + '(http.responseXML)');
                        }
                        else
                        {
                            eval(callback_function + '(http.responseText)');
                        }
                    }
                }
                else
                {
                    alert('Error! (' + http.status + ')');
					return false;
                }
            }
        }

        if(!post_values)
        {
            post_values = null;
        }
        if(!http_method)
        {
            http_method = "GET";
        }

        http.open(http_method, url, true);

        if(http_method == "POST")
        {
            http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
        }

        http.send(post_values);
		
		return true;
    }

    function handle_response(result)
    {
        document.getElementById('result_div').innerHTML = result;
    }
	
	
	
    function edit_request(url, callback_function, targetdiv, http_method, post_values, return_xml)
    {
        http = create_http_object();

        if(!http)
        {
            alert('Je browser ondersteunt deze feature niet.');
            return false;
        }

        http.onreadystatechange = function()
        {
            if(http.readyState == 4)
            {
                if(http.status == 200)
                {
                	edit_response(http.responseText, targetdiv);
                }
                else
                {
                    alert('Error! (' + http.status + ')');
					return false;
                }
            }
        }

        if(!post_values)
        {
            post_values = null;
        }
        if(!http_method)
        {
            http_method = "GET";
        }

        http.open(http_method, url, true);

        if(http_method == "POST")
        {
            http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
        }

        http.send(post_values);
		return true;
    }

    function edit_response(result, targetdiv)
    {
        document.getElementById(targetdiv).innerHTML = result;
    }