/*

 * talaaaaaaaaaaaaa

*/



function Ajax() {

  this.req = null;

  this.url = null;

  this.status = null;

  this.statusText = '';

  this.method = 'GET';

  this.async = true;

  this.dataPayload = null;

  this.readyState = null;

  this.responseText = null;

  this.responseXML = null;

  this.handleResp = null;

  this.responseFormat = 'text', // 'text', 'xml', 'object'

  this.mimeType = null;

  this.headers = [];



  

  this.init = function() {

    var i = 0;

    var reqTry = [ 

      function() { return new XMLHttpRequest(); },

      function() { return new ActiveXObject('Msxml2.XMLHTTP') },

      function() { return new ActiveXObject('Microsoft.XMLHTTP' )} ];

      

    while (!this.req && (i < reqTry.length)) {

      try { 

        this.req = reqTry[i++]();

      } 

      catch(e) {}

    }

    return true;

  };

  this.doGet = function(url, hand, format) {

    this.url = url;

    this.handleResp = hand;

    this.responseFormat = format || 'text';

    this.doReq();

  };

  this.doPost = function(url, dataPayload, hand, format) {

    this.url = url;

    this.dataPayload = dataPayload;

    this.handleResp = hand;

    this.responseFormat = format || 'text';

    this.method = 'POST';

    this.doReq();

  };

  this.doReq = function() {

    var self = null;

    var req = null;

    var headArr = [];

    

    if (!this.init()) {

      alert('Could not create XMLHttpRequest object.');

      return;

    }

    req = this.req;

    req.open(this.method, this.url, this.async);

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

      this.req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

    }

    if (this.method == 'POST') {

      req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

    }

    self = this;

    req.onreadystatechange = function() {

      var resp = null;

      self.readyState = req.readyState;

      if (req.readyState == 4) {

        

        self.status = req.status;

        self.statusText = req.statusText;

        self.responseText = req.responseText;

        self.responseXML = req.responseXML;

        

        switch(self.responseFormat) {

          case 'text':

            resp = self.responseText;

            break;

          case 'xml':

            resp = self.responseXML;

            break;

          case 'object':

            resp = req;

            break;

        }

        

        if (self.status > 199 && self.status < 300) {

          if (!self.handleResp) {

            alert('No response handler defined ' +

              'for this XMLHttpRequest object.');

            return;

          }

          else {

            self.handleResp(resp);

          }

        }

        

        else {

          self.handleErr(resp);

        }

      }

    }

    req.send(this.dataPayload);

  };

  this.abort = function() {

    if (this.req) {

      this.req.onreadystatechange = function() { };

      this.req.abort();

      this.req = null;

    }

  };

  this.handleErr = function() {

    var errorWin;

    // Create new window and display error

    try {

      errorWin = window.open('', 'errorWin');

      errorWin.document.body.innerHTML = this.responseText;

    }

    // If pop-up gets blocked, inform user

    catch(e) {

      alert('An error occurred, but the error message cannot be' +

      ' displayed because of your browser\'s pop-up blocker.\n' +

      'Please allow pop-ups from this Web site.');

    }

  };

  this.setMimeType = function(mimeType) {

    this.mimeType = mimeType;

  };

  this.setHandlerResp = function(funcRef) {

    this.handleResp = funcRef;

  };

  this.setHandlerErr = function(funcRef) {

    this.handleErr = funcRef; 

  };

  this.setHandlerBoth = function(funcRef) {

    this.handleResp = funcRef;

    this.handleErr = funcRef;

  };

  this.setRequestHeader = function(headerName, headerValue) {

    this.headers.push(headerName + ': ' + headerValue);

  };

  

}