//based on prototype's ajax class
//to be used with prototype.lite, moofx.mad4milk.net.
//added execute by Rene Lopez Caballero

ajax = Class.create();
ajax.prototype = {
	initialize: function(url, options){
		this.execute = options.execute || false;
		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);
			if ( this.execute )
				setTimeout(function(){ eval( this.transport.responseText ); }.bind(this), 10);
			this.transport.onreadystatechange = function(){};
		}
	},

	getTransport: function() {
		if(window.ActiveXObject) {
			try {
				return new ActiveXObject("Msxml2.XMLHTTP");
			} catch(e) {
				try {
					return new ActiveXObject("Microsoft.XMLHTTP");
				} catch(e) { 
					return false; 
				}
			}
		} else {
			if (window.XMLHttpRequest) 
				return new XMLHttpRequest();
			else 
				return false;
		}
	}
};