function sack(file) {
this.xmlhttp = null;this.resetData = function(){this.method = "POST";this.queryStringSeparator = "?";this.argumentSeparator = "&";this.URLString = "";this.encodeURIString = true;this.execute = false;this.element = null;this.elementObj = null;this.requestFile = file;this.vars = new Object();this.responseStatus = new Array(2);};
this.resetFunctions = function() {this.onLoading = function() { };this.onLoaded = function() { };this.onInteractive = function() { };this.onCompletion = function() { };this.onError = function() { };this.onFail = function() { };};this.reset = function() {this.resetFunctions();this.resetData();};
this.createAJAX = function() {try {this.xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");} catch (e1) {try {this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");} catch (e2) {this.xmlhttp = null;}}
if (! this.xmlhttp) {if (typeof XMLHttpRequest != "undefined") {this.xmlhttp = new XMLHttpRequest();} else {this.failed = true;}}};
this.setVar = function(name, value){this.vars[name] = Array(value, false);};
this.encVar = function(name, value, returnvars) {if (true == returnvars) {return Array(encodeURIComponent(name), encodeURIComponent(value));} else {this.vars[encodeURIComponent(name)] = Array(encodeURIComponent(value), true);}}
this.processURLString = function(string, encode) {encoded = encodeURIComponent(this.argumentSeparator);regexp = new RegExp(this.argumentSeparator + "|" + encoded);varArray = string.split(regexp);for (i = 0; i < varArray.length; i++){urlVars = varArray[i].split("=");if (true == encode){this.encVar(urlVars[0], urlVars[1]);} else {this.setVar(urlVars[0], urlVars[1]);}}}
this.createURLString = function(urlstring) {if (this.encodeURIString && this.URLString.length) {this.processURLString(this.URLString, true);}
if (urlstring) {if (this.URLString.length) {this.URLString += this.argumentSeparator + urlstring;} else {this.URLString = urlstring;}}
this.setVar("rndval", new Date().getTime());urlstringtemp = new Array();for (key in this.vars) {if (false == this.vars[key][1] && true == this.encodeURIString) {encoded = this.encVar(key, this.vars[key][0], true);delete this.vars[key];this.vars[encoded[0]] = Array(encoded[1], true);key = encoded[0];}
urlstringtemp[urlstringtemp.length] = key + "=" + this.vars[key][0];}if (urlstring){this.URLString += this.argumentSeparator + urlstringtemp.join(this.argumentSeparator);} else {this.URLString += urlstringtemp.join(this.argumentSeparator);}}
this.runResponse = function() {eval(this.response);}
this.runAJAX = function(urlstring) {if (this.failed) {this.onFail();} else {this.createURLString(urlstring);if (this.element) {this.elementObj = document.getElementById(this.element);}
if (this.xmlhttp) {var self = this;if (this.method == "GET") {totalurlstring = this.requestFile + this.queryStringSeparator + this.URLString;this.xmlhttp.open(this.method, totalurlstring, true);} else {this.xmlhttp.open(this.method, this.requestFile, true);try {this.xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded")} catch (e) { }}
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;if (self.execute){self.runResponse();};if (self.elementObj){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;}};if (self.responseStatus[0] == "200") {self.onCompletion();} else {self.onError();};self.URLString = "";break;}};this.xmlhttp.send(this.URLString);}}};this.reset();this.createAJAX();}