var ajax_debug_mode = false;
var ajax_request_type = "<?php echo $t; ?>";
var ajax_target_id = "";
var ajax_failure_redirect = "<?php echo $this->failureRedirect; ?>";

function ajax_debug(text) {
	if (ajax_debug_mode)
alert(text);
}

function ajax_init_object() {
 	ajax_debug("ajax_init_object() called..")
 	
 	var A;
 	
 	var msxmlhttp = new Array(
'Msxml2.XMLHTTP.5.0',
'Msxml2.XMLHTTP.4.0',
'Msxml2.XMLHTTP.3.0',
'Msxml2.XMLHTTP',
'Microsoft.XMLHTTP');
	for (var i = 0; i < msxmlhttp.length; i++) {
try {
	A = new ActiveXObject(msxmlhttp[i]);
} catch (e) {
	A = null;
}
	}
 	
	if(!A && typeof XMLHttpRequest != "undefined")
A = new XMLHttpRequest();
	if (!A)
ajax_debug("Could not create connection object.");
	return A;
}

var ajax_requests = new Array();

function ajax_cancel() {
	for (var i = 0; i < ajax_requests.length; i++) 
ajax_requests[i].abort();
}

function ajax_do_call(uri, func_name, args, debug) {
	var i, x, n;
	var post_data;
	var target_id;
	
	ajax_debug_mode = debug;
	
	ajax_debug("in ajax_do_call().." + ajax_request_type + "/" + ajax_target_id);
	target_id = ajax_target_id;
	if (typeof(ajax_request_type) == "undefined" || ajax_request_type == "") 
ajax_request_type = "GET";
	
	if (ajax_request_type == "GET") {
	
if (uri.indexOf("?") == -1) 
	uri += "?rs=" + escape(func_name);
else
	uri += "&rs=" + escape(func_name);
uri += "&rst=" + escape(ajax_target_id);
uri += "&rsrnd=" + new Date().getTime();

for (i = 0; i < args.length-1; i++) 
	uri += "&rsargs[]=" + escape(args[i]);

post_data = null;
	} 
	else if (ajax_request_type == "POST") {
post_data = "rs=" + escape(func_name);
post_data += "&rst=" + escape(ajax_target_id);
post_data += "&rsrnd=" + new Date().getTime();

for (i = 0; i < args.length-1; i++) 
	post_data = post_data + "&rsargs[]=" + escape(args[i]);
	}
	else {
alert("Illegal request type: " + ajax_request_type);
	}
	
	x = ajax_init_object();
	if (x == null) {
if (ajax_failure_redirect != "") {
	location.href = ajax_failure_redirect;
	return false;
} else {
	ajax_debug("NULL ajax object for user agent:\n" + navigator.userAgent);
	return false;
}
	} else {
x.open(ajax_request_type, uri, true);
// window.open(uri);

ajax_requests[ajax_requests.length] = x;

if (ajax_request_type == "POST") {
	x.setRequestHeader("Method", "POST " + uri + " HTTP/1.1");
	x.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
}
	
x.onreadystatechange = function() {
	if (x.readyState != 4) 
return;

	ajax_debug("received " + x.responseText);

	var status;
	var data;
	var txt = x.responseText.replace(/^\s*|\s*$/g,"");
	status = txt.charAt(0);
	data = txt.substring(2);

	if (status == "") {
// let's just assume this is a pre-response bailout and let it slide for now
	} else if (status == "-") 
alert("Error: " + data);
	else {
if (target_id != "") 
	document.getElementById(target_id).innerHTML = eval(data);
else {
	try {
var callback;
var extra_data = false;
if (typeof args[args.length-1] == "object") {
	callback = args[args.length-1].callback;
	extra_data = args[args.length-1].extra_data;
} else {
	callback = args[args.length-1];
}
callback(eval(data), extra_data);
	} catch (e) {
ajax_debug("Caught error " + e + ": Could not eval " + data );
	}
}
	}
}
	}
	
	ajax_debug(func_name + " uri = " + uri + "/post = " + post_data);
	x.send(post_data);
	ajax_debug(func_name + " waiting..");
	delete x;
	return true;
}