// remote scripting library
// (c) copyright 2005 modernmethod, inc
var sajax_debug_mode = false;
var sajax_request_type = "POST";
var sajax_target_id = "";
var sajax_failure_redirect = "";

function sajax_debug(text) {
	if (sajax_debug_mode)
		alert(text);
}

	function sajax_init_object() {
		sajax_debug("sajax_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)
		sajax_debug("Could not create connection object.");
	return A;
}

var sajax_requests = new Array();

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

function sajax_do_call(func_name, args) {
	var i, x, n;
	var post_data;
	var target_id;

	sajax_debug("in sajax_do_call().." + sajax_request_type + "/" + sajax_target_id);
	target_id = sajax_target_id;
	if (typeof(sajax_request_type) == "undefined" || sajax_request_type == "") 
		sajax_request_type = "GET";
	
	if (sajax_request_type == "GET") {
	
		if (uri.indexOf("?") == -1) 
			uri += "?rs=" + escape(func_name);
		else
			uri += "&rs=" + escape(func_name);
		uri += "&rst=" + escape(sajax_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 (sajax_request_type == "POST") {
		post_data = "rs=" + escape(func_name);
		post_data += "&rst=" + escape(sajax_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: " + sajax_request_type);
	}
	
	x = sajax_init_object();
	if (x == null) {
		if (sajax_failure_redirect != "") {
			location.href = sajax_failure_redirect;
			return false;
		} else {
			sajax_debug("NULL sajax object for user agent: " + navigator.userAgent);
			return false;
		}
	} else {
		x.open(sajax_request_type, uri, true);
		// window.open(uri);
		
		sajax_requests[sajax_requests.length] = x;
		
		if (sajax_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;

			sajax_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) {
						sajax_debug("Caught error " + e + ": Could not eval " + data );
					}
				}
			}
		}
	}
	
	sajax_debug(func_name + " uri = " + uri + "/post = " + post_data);
	x.send(post_data);
	sajax_debug(func_name + " waiting..");
	delete x;
	return true;
}


var dynamicContent_ajaxObjects = new Array(); 
var jsCache = new Array();
var enableCache = true; 

function ajax_loadContent(divId,pathToFile)
{
  if(enableCache && jsCache[pathToFile]){
    document.getElementById(divId).innerHTML = jsCache[pathToFile];
    return;
  }
  
  var ajaxIndex = dynamicContent_ajaxObjects.length;
  document.getElementById(divId).innerHTML = 'Loading content...';
  dynamicContent_ajaxObjects[ajaxIndex] = new sack();
  dynamicContent_ajaxObjects[ajaxIndex].requestFile = pathToFile;

  dynamicContent_ajaxObjects[ajaxIndex].onCompletion = 
  function(){ ajax_showContent(divId,ajaxIndex,pathToFile); };  

  dynamicContent_ajaxObjects[ajaxIndex].runAJAX();  
  
  
} 

function ajax_showContent(divId,ajaxIndex,pathToFile)
{
  document.getElementById(divId).innerHTML =
    dynamicContent_ajaxObjects[ajaxIndex].response;
  if(enableCache){
    jsCache[pathToFile] = 
    dynamicContent_ajaxObjects[ajaxIndex].response;
  }
  dynamicContent_ajaxObjects[ajaxIndex] = false;
}



function sack(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;
							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();
}