var CrossXHR_ready;
var CrossXHR_objects;
var CrossXHR_counter;
if (typeof(CrossXHR_counter) == 'undefined'){

  var SWF_URL; // set if you want to hardcode path to crossxhr.swf

  CrossXHR_objects = new Object();
  CrossXHR_counter = 0;
  function CrossXHR_(parent) {
    this.parent = parent;
    this.id = CrossXHR_counter++;
    CrossXHR_objects[this.id] = this;
    var gateway;
    this.open = function(method, url) {
      gateway = document.getElementById("CrossXHR_gateway");
      gateway.create(this.id, method, url);
    }
    this.abort = function() {
      gateway.abort(this.id);
    }
    this.send = function(content) {
      gateway.send(this.id, content);
    }
    this.handler = function(status, data) {
      if (status=="NaN") // FIXME: hack
        status = 503;
      var obj = this.parent ? parent : this;
      obj.readyState = 4;
      obj.responseText = data;
      obj.status = status;

      var id = this.id;
      setTimeout(function(){  // must release flash
        gateway.finished(id); 
        obj.onreadystatechange.call(obj, obj); 
      }, 10);
    }
  }
  function CrossXHR_handler(id, status, data) {
    CrossXHR_objects[id].handler(status, data);
  }
  function CrossXHR() {
    function trace(){
      if (navigator.userAgent.toLowerCase().indexOf("firefox")==-1)
        return;
      if (typeof(console)!='undefined')
        if (typeof(console.log)!='undefined')
          console.log.apply(console,arguments);
    }
    var obj;
    var queue = new Array();
    var max_wait = 1000;
    var gateway = document.getElementById("CrossXHR_gateway");
    if (gateway && gateway.create)
      if (typeof(CrossXHR_ready) != 'undefined') 
        obj = new CrossXHR_(this);
    if (!obj) {
      
      var self = this;
      queue.push( function() { obj = new CrossXHR_(self) } );
      setTimeout(function(){ self._process_queue() }, 100);
    }
    
    this.open = function(arg1,arg2) {
      if (obj)
        obj.open(arg1,arg2);
      else {
        queue.push( function() { obj.open(arg1,arg2) } );
      }
    }
    this.abort = function(arg1) {
      if (obj)
        obj.abort(arg1);
    }
    this.send = function(arg1) {
      if (obj) {
        obj.send(arg1);
      } else {
        queue.push( function() { 
          obj.send(arg1) } );
      }
    }
    this._process_queue = function() {
      gateway = document.getElementById("CrossXHR_gateway");
      var ok = obj ? true : false;
      if (!ok)
        if (gateway && gateway.create)
          if (typeof(CrossXHR_ready) != 'undefined') 
            ok = true;
      if (!ok) {
        if ((max_wait % 25) == 0) trace("waiting for CrossXHR_gateway to initialize (is flash playing?)");
        if (max_wait-- > 0)
          setTimeout(function(){ self._process_queue() }, 100);
      } else {
        while (queue.length > 0) {
          var task = queue.shift();
          task.apply(this);
        }
      }
    }
  }

  (function(){
           
    var prefix="/Ext/js/";
    var postload;
    var tags = document.getElementsByTagName("script");
    for ( var i = 0; i < tags.length; i++ ) {
      var src = tags[i].src.toLowerCase();
      var pos = src.indexOf("crossxhr.js")
      if ( pos != -1 ) { 
        prefix = tags[i].src.substring(0,pos);
        postload = src.indexOf("postload") != -1;
      }
    }

    if (!SWF_URL)
      SWF_URL = prefix+'crossxhr.swf';

    if (postload) {
      var span = document.createElement('span');
      span.style.position = "fixed";
      span.style.left = "0px";
      span.style.top = "0px";
      span.style.zIndex = 2147483647;
      var span2 = document.createElement('span');
      span2.id="CrossXHR_gateway";
      span.appendChild(span2);
      document.body.appendChild(span);
    } else
      document.write('<span style="position:fixed;top:0px;left:0px;z-index:2147483647"><span id="CrossXHR_gateway"></span></span>');

    var swfobject;
    function inject_flash() {
      swfobject.embedSWF(SWF_URL, "CrossXHR_gateway", "1", "1", "8.0.0", "/Ext/js/swfobject/expressInstall.swf", {}, {wmode: 'transparent', allowscriptaccess:"always"} );

      if (typeof(CrossXHR_startup_hooks) != 'undefined') {
        for (var i=0; i < CrossXHR_startup_hooks.length; i++)
          (CrossXHR_startup_hooks[i])();
      }
    }

    /*	SWFObject v2.2 <http://code.google.com/p/swfobject/> 
      is released under the MIT License <http://www.opensource.org/licenses/mit-license.php> 
    */
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    inject_flash();
  })();
}