/* Simple AJAX Code-Kit (SACK) v1.6.1 */

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/* www.twilightuniverse.com */

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/* Software licenced under a modified X11 licence,

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see documentation or authors website for more details */

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function sack(file) {

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this.xmlhttp = null;

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this.resetData = function() {

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this.method = "POST";

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this.queryStringSeparator = "?";

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this.argumentSeparator = "&";

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this.URLString = "";

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this.encodeURIString = true;

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this.execute = false;

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this.element = null;

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this.elementObj = null;

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this.requestFile = file;

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this.vars = new Object();

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this.responseStatus = new Array(2);

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};

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this.resetFunctions = function() {

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this.onLoading = function() { };

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this.onLoaded = function() { };

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this.onInteractive = function() { };

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this.onCompletion = function() { };

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this.onError = function() { };

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this.onFail = function() { };

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};

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this.reset = function() {

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this.resetFunctions();

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this.resetData();

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};

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this.createAJAX = function() {

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try {

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this.xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");

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} catch (e1) {

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try {

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this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");

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} catch (e2) {

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this.xmlhttp = null;

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}

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}

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if (! this.xmlhttp) {

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if (typeof XMLHttpRequest != "undefined") {

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this.xmlhttp = new XMLHttpRequest();

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} else {

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this.failed = true;

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}

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}

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};

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this.setVar = function(name, value){

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this.vars[name] = Array(value, false);

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};

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this.encVar = function(name, value, returnvars) {

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if (true == returnvars) {

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return Array(encodeURIComponent(name), encodeURIComponent(value));

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} else {

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this.vars[encodeURIComponent(name)] = Array(encodeURIComponent(value), true);

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}

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}

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this.processURLString = function(string, encode) {

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encoded = encodeURIComponent(this.argumentSeparator);

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regexp = new RegExp(this.argumentSeparator + "|" + encoded);

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varArray = string.split(regexp);

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for (i = 0; i < varArray.length; i++){

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urlVars = varArray[i].split("=");

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if (true == encode){

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this.encVar(urlVars[0], urlVars[1]);

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} else {

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this.setVar(urlVars[0], urlVars[1]);

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}

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}

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}

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this.createURLString = function(urlstring) {

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if (this.encodeURIString && this.URLString.length) {

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this.processURLString(this.URLString, true);

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}

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if (urlstring) {

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if (this.URLString.length) {

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this.URLString += this.argumentSeparator + urlstring;

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} else {

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this.URLString = urlstring;

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}

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}

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// prevents caching of URLString

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this.setVar("rndval", new Date().getTime());

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urlstringtemp = new Array();

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for (key in this.vars) {

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if (false == this.vars[key][1] && true == this.encodeURIString) {

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encoded = this.encVar(key, this.vars[key][0], true);

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delete this.vars[key];

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this.vars[encoded[0]] = Array(encoded[1], true);

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key = encoded[0];

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}

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urlstringtemp[urlstringtemp.length] = key + "=" + this.vars[key][0];

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}

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if (urlstring){

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this.URLString += this.argumentSeparator + urlstringtemp.join(this.argumentSeparator);

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} else {

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this.URLString += urlstringtemp.join(this.argumentSeparator);

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}

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}

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this.runResponse = function() {

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eval(this.response);

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}

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this.runAJAX = function(urlstring) {

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if (this.failed) {

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this.onFail();

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} else {

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this.createURLString(urlstring);

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if (this.element) {

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this.elementObj = document.getElementById(this.element);

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}

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if (this.xmlhttp) {

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var self = this;

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if (this.method == "GET") {

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totalurlstring = this.requestFile + this.queryStringSeparator + this.URLString;

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this.xmlhttp.open(this.method, totalurlstring, true);

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} else {

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this.xmlhttp.open(this.method, this.requestFile, true);

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try {

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this.xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded")

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} catch (e) { }

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}

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this.xmlhttp.onreadystatechange = function() {

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switch (self.xmlhttp.readyState) {

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case 1:

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self.onLoading();

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break;

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case 2:

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self.onLoaded();

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break;

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case 3:

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self.onInteractive();

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break;

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case 4:

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self.response = self.xmlhttp.responseText;

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self.responseXML = self.xmlhttp.responseXML;

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self.responseStatus[0] = self.xmlhttp.status;

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self.responseStatus[1] = self.xmlhttp.statusText;

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if (self.execute) {

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self.runResponse();

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}

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if (self.elementObj) {

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elemNodeName = self.elementObj.nodeName;

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elemNodeName.toLowerCase();

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if (elemNodeName == "input"

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|| elemNodeName == "select"

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|| elemNodeName == "option"

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|| elemNodeName == "textarea") {

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self.elementObj.value = self.response;

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} else {

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self.elementObj.innerHTML = self.response;

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}

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}

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if (self.responseStatus[0] == "200") {

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self.onCompletion();

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} else {

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self.onError();

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}

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self.URLString = "";

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break;

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}

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};

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this.xmlhttp.send(this.URLString);

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}

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}

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};

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this.reset();

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this.createAJAX();

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}

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