var js_rotBanners = new Array();
var js_rotTimer = 0;
var rotBanner = 0;
var rotTimer  = 0;


function timerAction() {
	var theDiv = getElementsByClassName('banner');
	if (theDiv.length != 1) {
		alert('There are no placeholders for banner_rotate');
		return 0;
	}
	theDiv = theDiv[0];
	theDiv.innerHTML = js_rotBanners[rotBanner];
	rotBanner++;
	if (rotBanner >= js_rotBanners.length) {
		rotBanner = 0;
	}
}

function doTimer() {
	rotTimer++;
	setTimeout('doTimer()', 1000);
	if (rotTimer >= js_rotTimer) {
		rotTimer = 0;
		timerAction();
	}
}

function onReceiveBanner(msg) {
	var tmsg = unescape(msg);
	var arr = tmsg.split('\n');
	var i = 0;
	for (i=1; i<arr.length; i++) {
		if (arr[i].length != 0) {
			js_rotBanners.push(arr[i]);
		}
	}
	
	if (js_rotBanners.length > 0) {
		js_rotTimer = parseInt(arr[0]);
	} else {
		alert('There are no banners added, or your banner_rotate module configuration is bad.');
		return false;
	}
	
	timerAction();
	doTimer();
}

function bannerRotateInit() {
	ajax_mem_load('/banner_rotate/banner_dump.php', 'onReceiveBanner');
}

var getElementsByClassName = function (className, tag, elm){
	if (document.getElementsByClassName) {
		getElementsByClassName = function (className, tag, elm) {
			elm = elm || document;
			var elements = elm.getElementsByClassName(className),
				nodeName = (tag)? new RegExp("\\b" + tag + "\\b", "i") : null,
				returnElements = [],
				current;
			for(var i=0, il=elements.length; i<il; i+=1){
				current = elements[i];
				if(!nodeName || nodeName.test(current.nodeName)) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	else if (document.evaluate) {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = "",
				xhtmlNamespace = "http://www.w3.org/1999/xhtml",
				namespaceResolver = (document.documentElement.namespaceURI === xhtmlNamespace)? xhtmlNamespace : null,
				returnElements = [],
				elements,
				node;
			for(var j=0, jl=classes.length; j<jl; j+=1){
				classesToCheck += "[contains(concat(' ', @class, ' '), ' " + classes[j] + " ')]";
			}
			try	{
				elements = document.evaluate(".//" + tag + classesToCheck, elm, namespaceResolver, 0, null);
			}
			catch (e) {
				elements = document.evaluate(".//" + tag + classesToCheck, elm, null, 0, null);
			}
			while ((node = elements.iterateNext())) {
				returnElements.push(node);
			}
			return returnElements;
		};
	}
	else {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = [],
				elements = (tag === "*" && elm.all)? elm.all : elm.getElementsByTagName(tag),
				current,
				returnElements = [],
				match;
			for(var k=0, kl=classes.length; k<kl; k+=1){
				classesToCheck.push(new RegExp("(^|\\s)" + classes[k] + "(\\s|$)"));
			}
			for(var l=0, ll=elements.length; l<ll; l+=1){
				current = elements[l];
				match = false;
				for(var m=0, ml=classesToCheck.length; m<ml; m+=1){
					match = classesToCheck[m].test(current.className);
					if (!match) {
						break;
					}
				}
				if (match) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	return getElementsByClassName(className, tag, elm);
};

	if (typeof Event == 'undefined') Event = new Object();
	
	Event.domReady = {
		add: function(fn) {
			if (Event.domReady.loaded) return fn();
			var observers = Event.domReady.observers;
			if (!observers) observers = Event.domReady.observers = [];
			observers[observers.length] = fn;
			if (Event.domReady.callback) return;
			Event.domReady.callback = function() {
				if (Event.domReady.loaded) return;
				Event.domReady.loaded = true;
				if (Event.domReady.timer) {
					clearInterval(Event.domReady.timer);
					Event.domReady.timer = null;
				}
				var observers = Event.domReady.observers;
				for (var i = 0, length = observers.length; i < length; i++) {
					var fn = observers[i];
					observers[i] = null;
					fn(); // make 'this' as window
				}
				Event.domReady.callback = Event.domReady.observers = null;
			};
			var ie = !!(window.attachEvent && !window.opera);
			var webkit = navigator.userAgent.indexOf('AppleWebKit/') > -1;
			if (document.readyState && webkit) {
				Event.domReady.timer = setInterval(function() {
					var state = document.readyState;
					if (state == 'loaded' || state == 'complete') {
						Event.domReady.callback();
					}
				}, 50);
			} else if (document.readyState && ie) {
				var src = (window.location.protocol == 'https:') ? '://0' : 'javascript:void(0)';
				document.write(
					'<script type="text/javascript" defer="defer" src="' + src + '" ' +
					'onreadystatechange="if (this.readyState == \'complete\') Event.domReady.callback();"' +
					'><\/script>');
			} else {
				if (window.addEventListener) {
					document.addEventListener("DOMContentLoaded", Event.domReady.callback, false);
					window.addEventListener("load", Event.domReady.callback, false);
				} else if (window.attachEvent) {
					window.attachEvent('onload', Event.domReady.callback);
				} else {
					var fn = window.onload;
					window.onload = function() {
						Event.domReady.callback();
						if (fn) fn();
					}
				}
			}
		}
	}
	
	Event.domReady.add(function() { bannerRotateInit(); });

var serverResponse = "";

function aSack(file){
	this.AjaxFailedAlert = "Your browser does not support the enhanced functionality of this website, and therefore you will have an experience that differs from the intended one.\n";
	this.requestFile = file;
	this.method = "POST";
	this.URLString = "";
	this.encodeURIString = true;
	this.execute = false;

	this.onLoading = function() { };
	this.onLoaded = function() { };
	this.onInteractive = function() { };
	this.onCompletion = function() { };

	this.createAJAX = function() {
		try {
			this.xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (err) {
				this.xmlhttp = null;
			}
		}
		if(!this.xmlhttp && typeof XMLHttpRequest != "undefined")
			this.xmlhttp = new XMLHttpRequest();
		if (!this.xmlhttp){
			this.failed = true; 
		}
	};
	
	this.setVar = function(name, value){
		if (this.URLString.length < 3){
			this.URLString = name + "=" + value;
		} else {
			this.URLString += "&" + name + "=" + value;
		}
	}
	
	this.encVar = function(name, value){
		var varString = encodeURIComponent(name) + "=" + encodeURIComponent(value);
	return varString;
	}
	
	this.encodeURLString = function(string){
		varArray = string.split('&');
		for (i = 0; i < varArray.length; i++){
			urlVars = varArray[i].split('=');
			if (urlVars[0].indexOf('amp;') != -1){
				urlVars[0] = urlVars[0].substring(4);
			}
			varArray[i] = this.encVar(urlVars[0],urlVars[1]);
		}
	return varArray.join('&');
	}
	
	this.runResponse = function(){
		eval(this.response);
	}
	
	this.runAJAX = function(urlstring){
		this.responseStatus = new Array(2);
		if(this.failed && this.AjaxFailedAlert){ 
			alert(this.AjaxFailedAlert); 
		} else {
			if (urlstring){ 
				if (this.URLString.length){
					this.URLString = this.URLString + "&" + urlstring; 
				} else {
					this.URLString = urlstring; 
				}
			}
			if (this.encodeURIString){
				var timeval = new Date().getTime(); 
				this.URLString = this.encodeURLString(this.URLString);
				this.setVar("rndval", timeval);
			}
			if (this.element) { this.elementObj = document.getElementById(this.element); }
			if (this.xmlhttp) {
				var self = this;
				if (this.method == "GET") {
					var totalurlstring = this.requestFile + "?" + this.URLString;
					this.xmlhttp.open(this.method, totalurlstring, true);
				} else {
					this.xmlhttp.open(this.method, this.requestFile, true);
				}
				if (this.method == "POST"){
  					try {
						this.xmlhttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded')  
					} catch (e) {}
				}

				this.xmlhttp.send(this.URLString);
				this.xmlhttp.onreadystatechange = function() {
					switch (self.xmlhttp.readyState){
						case 1:
							self.onLoading();
						break;
						case 2:
							self.onLoaded();
						break;
						case 3:
							self.onInteractive();
						break;
						case 4:
							self.response = self.xmlhttp.responseText;
							serverResponse = self.response;
							self.responseXML = self.xmlhttp.responseXML;
							self.responseStatus[0] = self.xmlhttp.status;
							self.responseStatus[1] = self.xmlhttp.statusText;
							self.onCompletion();
							if(self.execute){ self.runResponse(); }
							if (self.elementObj) {
								var elemNodeName = self.elementObj.nodeName;
								elemNodeName.toLowerCase();
								if (elemNodeName == "input" || elemNodeName == "select" || elemNodeName == "option" || elemNodeName == "textarea"){
									self.elementObj.value = self.response;
								} else {
									self.elementObj.innerHTML = self.response;
								}
							}
							self.URLString = "";
							
						break;
					}
				};
			}
		}
	};
    this.createAJAX();
}

function ajax_mem_load(url, func)
{
	var newAjax = new aSack(url);
	if(url.indexOf('?')>=0){
		newAjax.method='GET';
		var string = url.substring(url.indexOf('?'));
		url = url.replace(string,'');
		string = string.replace('?','');
		var items = string.split(/&/g);
		for(var no=0;no<items.length;no++){
			var tokens = items[no].split('=');
			if(tokens.length==2){
				newAjax.setVar(tokens[0],tokens[1]);
			}	
		}	
		url = url.replace(string,'');
	}
	newAjax.requestFile = url;
	newAjax.onCompletion = function(){ setTimeout(func+'(\''+escape(serverResponse)+'\')', 1); };	
	newAjax.runAJAX();
}