function majax(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 {
                //alert('Cannot create XMLHTTP instance');
				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;
			}
		}

		// prevents caching of 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", "text/html; charset=utf-8")
					       this.xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded")
					} catch (e) {
                                               //alert('Request to set header failed');
                                               //autoUpdate();
                                        }
				}

				this.xmlhttp.onreadystatechange = function() {
                    //log("readystate = " + self.xmlhttp.readyState);
					switch (self.xmlhttp.readyState) {
						case 1:
							self.onLoading();
							break;
						case 2:
							self.onLoaded();
							break;
						case 3:
							self.onInteractive();
							break;
                        case 4:
                            try {
                                self.response = self.xmlhttp.responseText;
                                //log(self.xmlhttp.responseText);
                            } catch (e) { 
                                //log("response text error");
                            }
                            //try {
                            //    self.responseXML = self.xmlhttp.responseXML;
                            //} catch (e) {log("response xml error")}
                            try {
                                self.responseStatus[0] = self.xmlhttp.status;
                            } catch (e) {
                                //log("response status error");
                            }
                            try {
                                self.responseStatus[1] = self.xmlhttp.statusText;
                            } catch (e) {
                                //log("response statustext error");
                            }

							if (self.execute) {
								self.runResponse();
							}

//							if (self.elementObj) {
//								elemNodeName = self.elementObj.nodeName.toLowerCase();
//								//elemNodeName.toLowerCase();
//								if (elemNodeName == "input"
//								|| elemNodeName == "select"
//								|| elemNodeName == "option"
//								|| elemNodeName == "textarea") {
//									self.elementObj.value = self.response;
//								} else {
//									self.elementObj.innerHTML = self.response;
//								}
//							}

//log("reponseStatus = " + self.responseStatus[0]);
    						if (self.responseStatus[0] == "200") {
								self.onCompletion();
							} else {
								self.onError();
                                
							}
//log("reponseText = " + self.xmlhttp.statusText);
//log(self.xmlhttp.responseText);
							self.URLString = "";
                            delete self.xmlhttp['onreadystatechange'];
                            self.xmlhttp=null;
                            self.responseStatus=null;
                        	// this.reset();
                        	// this.createAJAX();
							break;
					}
				};

				this.xmlhttp.send(this.URLString);
			}
		}
	};

	this.reset();
	this.createAJAX();
}