/* El Cartel Scriptscript
* Created: 01022010. This notice must stay intact for usage 
* Author: Lenny Pain
*/

var net=new Object();
net.READY_STATE_UNINITIALIZED=0;
net.READY_STATE_LOADING=1;
net.READY_STATE_LOADED=2;
net.READY_STATE_INTERACTIVE=3;
net.READY_STATE_COMPLETE=4;
net.ContentLoader=function(url,onload,onerror){
this.url=url;
this.req=null;
this.onload=onload;
this.onerror=(onerror) ? onerror : this.defaultError;
this.loadXMLDoc(url);
}
net.ContentLoader.prototype={
    loadXMLDoc: function (url) {
        if (window.XMLHttpRequest) {
            this.req = new XMLHttpRequest();
        } else if (window.ActiveXObject) {
            this.req = new ActiveXObject("Microsoft.XMLHTTP");
        }
        if (this.req) {
            try {
                var loader = this;
                this.req.onreadystatechange = function () {
                    loader.onReadyState.call(loader);
                }
                this.req.open('GET', url, true);
                this.req.send(null);
            } catch (err) {
                this.onerror.call(this);
            }
        }
    },
    onReadyState: function () {
        var req = this.req;
        var ready = req.readyState;
        if (ready == net.READY_STATE_COMPLETE) {
            var httpStatus = req.status;
            if (httpStatus == 200 || httpStatus == 0) {
                this.onload.call(this);
            } else {
                this.onerror.call(this);
            }
        }
    },
    defaultError: function () {
        alert("error fetching data!"
+ "\n\nreadyState:" + this.req.readyState
+ "\nstatus: " + this.req.status
+ "\nheaders: " + this.req.getAllResponseHeaders());
    }
}