//based on prototype's ajax class
//to be used with prototype.lite, moofx.mad4milk.net.

ajax = Class.create();
ajax.prototype = {
    initialize: function(url, options){
        this.transport = this.getTransport();
        this.postBody = options.postBody || '';
        this.method = options.method || 'post';
        this.onComplete = options.onComplete || null;
        this.update = $(options.update) || null;
        this.request(url);
    },

    request: function(url){
        this.transport.open(this.method, url, true);
        this.transport.onreadystatechange = this.onStateChange.bind(this);
        if (this.method == 'post') {
            this.transport.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
            if (this.transport.overrideMimeType) this.transport.setRequestHeader('Connection', 'close');
        }
        this.transport.send(this.postBody);
    },

    onStateChange: function(){
        if (this.transport.readyState == 4 && this.transport.status == 200) {
            if (this.onComplete)
                setTimeout(function(){this.onComplete(this.transport);}.bind(this), 10);
            if (this.update)
                setTimeout(function(){this.update.innerHTML = this.transport.responseText;}.bind(this), 10);
            this.transport.onreadystatechange = function(){};
        }
    },

    getTransport: function() {
        if (window.ActiveXObject) return new ActiveXObject('Microsoft.XMLHTTP');
        else if (window.XMLHttpRequest) return new XMLHttpRequest();
        else return false;
    }
};