var oSajax = {
	debug_mode: false,
	request_type: "GET",
	uri: "",
	debug: function (text) {
		if (this.debug_mode) {
			//alert("RSD: " + text)
		}
	},
	init: function () {
		//this.debug("sajax_init_object() called..")
		var A;
		try {
			A=new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				A=new ActiveXObject("Microsoft.XMLHTTP");
			} catch (oc) {
				A=null;
			}
		}
		if(!A && typeof XMLHttpRequest != "undefined") {
			A = new XMLHttpRequest();
		}
		if (!A) {
			//this.debug("Could not create connection object.");
		} 
		return A;
	}, 
	do_call: function () {
		var i, x, n;
		var post_data;
		var callback=null;
		var uri = this.uri;
		var al = arguments.length;
		var args=new Array();
		if(!al) {
			alert("Necesito por lo menos un argumento");
		} else {
			func_name = arguments[0];
			if(al>1) {
				callback=arguments[1];
				for(i=2;i<al;i++) {
					args.push(arguments[i]);
				}
			}

		}
		if (this.request_type == "GET") {
			if (uri.indexOf("?") == -1) {
				uri = uri + "?rs=" + escape(func_name);
			} else {
				uri = uri + "&rs=" + escape(func_name);
			}
			for (i = 0; i < args.length; i++) {
				uri = uri + "&rsargs[]=" + escape(args[i]);
			}
			uri = uri + "&rsrnd=" + new Date().getTime();
			post_data = null;
		} else {
			post_data = "rs=" + escape(func_name);
			for (i = 0; i < args.length; i++) {
				post_data = post_data + "&rsargs[]=" + escape(args[i]);
			}
		}
		x = this.init();
		x.open(this.request_type, uri, true);
		if (this.request_type == "POST") {
			x.setRequestHeader("Method", "POST " + uri + " HTTP/1.1");
			x.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		}
		var self=this;
		x.onreadystatechange = function() {
			if (x.readyState != 4) {					
				return;
			}
			self.debug("received " + x.responseText);
			var status;
			var data;
			status = x.responseText.charAt(0);
			data = x.responseText.substring(2);
			if (status == "-") {
				alert("Error: " + data);
			} else if(callback) {
				callback(data);
			}
		}
		x.send(post_data);
		//this.debug(func_name + " uri = " + uri + "/post = " + post_data);
		//this.debug(func_name + " waiting..");
		delete x;
	}
}