/*
10000
true
security
checkuser
slideshow
remove_item
*/
var counter = 0; 
var Queuecount = 1; 
var ajax_processing = false; 
var theTimeout = new Array; 
var AjaxQueue = new Array; 
var FuncQueue = new Array; 
// Perform the AJAX call
function ajax_performXML(thefunc, type, args){
	var args1 = new Array();
	for (var i = 0; i < args.length; i++){
		args1[i] = args[i];
	}
	func = args[args.length - 1];
	if (self.func && func.substring(func.length - 5) == '_init'){
		args1.pop()
		new ajax(thefunc, args1, type, func);
	}
	else {
		new ajax(thefunc, args1, type);
	}
}
get_security = function(){
	ajax_performXML('security', 'get', arguments);
}
post_security = function(){
	ajax_performXML('security', 'post', arguments);
}
get_checkuser = function(){
	ajax_performXML('checkuser', 'get', arguments);
}
post_checkuser = function(){
	ajax_performXML('checkuser', 'post', arguments);
}
get_slideshow = function(){
	ajax_performXML('slideshow', 'get', arguments);
}
post_slideshow = function(){
	ajax_performXML('slideshow', 'post', arguments);
}
get_remove_item = function(){
	ajax_performXML('remove_item', 'get', arguments);
}
post_remove_item = function(){
	ajax_performXML('remove_item', 'post', arguments);
}
function ajax(func, params, method, return_func){
	ajax_processing = true;
	// Increment the counter
	counter++;
	ajax.counter = counter;
	ajax.obj = new Object();
	ajax.createXMLobj = function(){
		// Try every ActiveX object we can
		var xmlhttpobjects = new Array();
		xmlhttpobjects[0] = 'Microsoft.XMLHTTP';
		xmlhttpobjects[1] = 'Msxml2.XMLHTTP.5.0';
		xmlhttpobjects[2] = 'Msxml2.XMLHTTP.4.0';
		xmlhttpobjects[3] = 'Msxml2.XMLHTTP.3.0';
		xmlhttpobjects[4] = 'Msxml2.XMLHTTP';
		// Loop through and try them
		for (var i = 0; i < xmlhttpobjects.length; i++){
			try {
				// Create object
				ajax.xmlobj = new ActiveXObject(xmlhttpobjects[i]);
			}
			catch (e){
				// Nope :(
				ajax.xmlobj = false
			}
			if (ajax.xmlobj != false){
				break;
			}
		}
		// Didn't work?
		if (!ajax.xmlobj && typeof(XMLHttpRequest) != "undefined"){
			try {
				// Create object
				ajax.xmlobj = new XMLHttpRequest();
			}
			catch (e){
				// Can't be done :(
				ajax.xmlobj = false;
			}
		}
		// Last resort... iFrames
		else if (!ajax.xmlobj){
			// Create a new object
			ajax.xmlobj = new Object();
			// Replicate the open function
			ajax.xmlobj.open = function(){
				// Create the iframe
				document.body.appendChild(document.createElement("<iframe id=\"ajax_call_no_" + ajax.counter + "\" style=\"display: none;\" src=\"/\"></iframe>"));
			}

			// Replicate the send function
			ajax.xmlobj.send = function(){
				// Tell the iframe to go get the data
				ajax_GetByID("ajax_call_no_" + ajax.counter).src = ajax.url;
				// Set a timeout for the readystate thing
				setTimeout("SetState(" + ajax.counter + ")", 5);
			}

			ajax.xmlobj.proccessXMLchange = function(){
				return false;
			}
			SetState = function(counter){
				var element = document.getElementById("ajax_call_no_" + counter);
				if (element.readyState == 'complete'){
					ajax.xmlobj.readyState = 4;
					ajax.xmlobj.status = 200;
					ajax.xmlobj.responseText = document.frames["ajax_call_no_" + counter].document.body.innerText;
					ajax.xmlobj.onreadystatechange();
					element.parentNode.removeChild(element);
				}
				else {
					setTimeout("SetState(" + counter + ")", 5);
				}
			}
		}
	}
	ajax.performXML = function(){
		ajax.callTimeout = setTimeout('ajax_timedout(\''+ counter +'\');', 10000);
		document.body.style.cursor = 'wait';
		if (typeof(return_func) != "undefined" && return_func != ""){
			ajax.xfunction = return_func;
		}
		var theparams = new Array();
		var start = '?';
		// Check params is set
		if (typeof(params) != "undefined"){
			theparams['ajax_param'] = params;
			theparams = ajax_serialize(theparams);
		}
		// Check if $_GET is already in use
		if (location.href.indexOf('?') != -1){
			var start = '&';
		}
		ajax.url = location.href.replace(/#.*/, '') + start + theparams + '&ajax_function=' + escape(func);
		var obj = ajax.xmlobj;
		// Perform Ajax
		if (typeof(method) == "undefined" || method == 'GET'){
			obj.open("GET", ajax.url, true);
		}
		else {
			obj.open("POST", location.href.replace(/#.*/, ''));
		}
		// Handle the results
		obj.onreadystatechange = function(){
			// Everything alright?
			if (obj.readyState == 4){
				// I don't know why, but JS sometimes moans that there's no body when loading
				if (typeof(document.body.style.cursor) != 'undefined'){
					document.body.style.cursor = 'auto';
				}
				if (typeof(obj) != 'undefined' && typeof(obj.status) != 'undefined' && obj.status == 200 && typeof(obj.responseText) != 'undefined'){
					if (typeof(ajax.callTimeout) != 'undefined'){
						clearTimeout(ajax.callTimeout);
					}
					var data = obj.responseText;
					if (data.substring(0, 5) == '<?xml' && obj.responseXML != ''){
						if (typeof(xfunc) != 'undefined' && self.xfunc){
							eval(ajax.xfunction + '(obj.responseXML)');
						}
					}
					else if (data.substring(0, 9) == 'AJAX_true'){
					if (typeof(ajax.xfunction) != "undefined"){
							eval(ajax.xfunction + '('+ data.substring(9) + ');');
						}
					}
					else if (data.substring(0, 10) == 'AJAX_false'){
						alert("The AJAX Module encountered an error whilst attempting to perform the selected action. It returned the following '" + data.substring(10) + "'.");
					}
					else {
						alert("The server encountered an error whilst attempting to perform the selected action. It returned the following '" + data + "'.");
					}
				}
				else {
					alert("There was a problem retrieving the XML data.");
				}
				ajax_processing = false;
				counter--;
			}
		}
		if (typeof(method) != "undefined" && method != 'GET'){
			obj.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		}
		obj.send(theparams + '&ajax_function=' + escape(func));
	}
	ajax.createXMLobj();
	ajax.performXML();
}
ajax_timedout = function(){
	document.body.style.cursor = 'auto';
	alert('Failed to retrieve response: timed out. Please try again.');
}
// Converts UTF8 to applicable characters
function ajax_utf8_string(thestr){
	if (thestr == '' || typeof(thestr) == 'undefined' || !thestr.toString){
		return '';
	}
	if ((matches = thestr.toString().match(/[\x90-\xFF]/g))){
		var replace = (matches[0].charCodeAt(0) & 0xFF).toString(16);
		thestr = thestr.toString().replace(matches[0], '%u00' + replace);
	}
	// Use %2B, not + for whitespaces
	thestr = escape(thestr).replace(/\+/g, "%2B");
	return thestr;
}
// Queues a function until all other Ajax calls have finished
function ajax_queue(func, theCount){
	if (typeof(theCount) == 'undefined' || theCount === false){
		args = new Array();
		args_no = new Array();
		var j = 0;
		// Loop through the arguments
		for (var i = 0; i < arguments.length; i++){
			if (i > 1){
				args[j] = arguments[i];
				args_no[j] = 'args[' + j + ']';
				j++;
			}
		}
	}
	else {
		args = FuncQueue[theCount]['args']
		args_no = FuncQueue[theCount]['args_no']
	}
	// Is it busy?
	if (ajax_processing){
		// Store the details?
		if (typeof(theCount) == 'undefined' || theCount == false){
			FuncQueue[Queuecount] = new Array();
			// Store the arguments;
			FuncQueue[Queuecount]['args'] = args;
			FuncQueue[Queuecount]['args_no'] = args_no;
			// Store the arguments;
			FuncQueue[Queuecount]['func'] = func;
			setTimeout('ajax_queue(FuncQueue[' + Queuecount + '][\'func\'], ' + Queuecount + ')', 300);
			Queuecount++;
		}
		// Set a timeout (again?)
		else {
			setTimeout('ajax_queue(FuncQueue[' + theCount + '][\'func\'], ' + theCount + ')', 300);
		}
	}
	else {
		return eval(func + '(' + args_no.join(', ') + ');');
	}
}
// To make up for Javascripts poor standardisation
function ajax_isObject(param) {
    return (param && typeof(param) == "object") || ajax_isFunction(param);
}
function ajax_serialize(formdata, numeric_prefix, key){
	var numeric_prefix = (typeof(numeric_prefix) == 'undefined') ? '' : numeric_prefix;
	var key = (typeof(key) == 'undefined') ? '' : key;
	var result = new Array();

	// Loop through the form data
	for (var k in formdata){
		// URLencode the key and add a numeric prefix
		var temp_key = ajax_utf8_string(!isNaN(parseFloat(k)) ? numeric_prefix + k : k);

		// Add the previous key
		if (key){
			temp_key = key + '[' + temp_key + ']';
		}

		// If it's an array, do it all again
		if (ajax_isArray(formdata[k])){
			result.push(ajax_serialize(formdata[k], '', temp_key));
		}
		else {
			result.push(temp_key + '=' + ajax_utf8_string(formdata[k]));
		}

	}

	return result.join('&');
}
function ajax_isArray(param){
	return ajax_isObject(param) && param.constructor == Array;
}
function ajax_isFunction(param){
	return typeof(param) == "function";
}
// Make life easy and browser compatible
function ajax_GetByID(id){
	if (document.getElementById){
		return document.getElementById(id);
		
	}
	else if (document.all){
		return document.all[id];
		
	}
	else if (document.layers)	{
		return document.layers[id];
		
	}
}