//window.ActiveXObject && !window.XMLHttpRequest
if (document.uniqueID)
{
 window.XMLHttpRequest = function()
  {
   var msxmls = new Array('Msxml2.XMLHTTP.5.0','Msxml2.XMLHTTP.4.0','Msxml2.XMLHTTP.3.0','Msxml2.XMLHTTP','Microsoft.XMLHTTP');
   for (var i = 0; i < msxmls.length; i++)
   {
    try 
    {
     return new ActiveXObject(msxmls[i]);
    } 
    catch (e)
    {
    }
   }
   return null;
  };
  
  window.XmlDom = function(){return new ActiveXObject("Msxml2.DOMDocument");}
}
else
{
	window.XmlDom = function(){return document.implementation.createDocument("", "", null);}
}





// Gecko support
/* ;-) */
// Opera support
if (window.opera && !window.XMLHttpRequest)
{
 window.XMLHttpRequest = function()
 {
  this.readyState = 0; // 0=uninitialized,1=loading,2=loaded,3=interactive,4=complete
  this.status = 0; // HTTP status codes
  this.statusText = '';
  this._headers = [];
  this._aborted = false;
  this._async = true;
  this._defaultCharset = 'ISO-8859-1';
  this._getCharset = function() 
  {
   var charset = _defaultCharset;
   var contentType = this.getResponseHeader('Content-type').toUpperCase();
   val = contentType.indexOf('CHARSET=');
   if (val != -1) 
   {
    charset = contentType.substring(val);
   }
   val = charset.indexOf(';');
   if (val != -1)
   {
    charset = charset.substring(0, val);
   }
   val = charset.indexOf(',');
   if (val != -1)
   {
    charset = charset.substring(0, val);
   }
   return charset;
  };

  this.abort = function()
  {
   this._aborted = true;
  };
  
  this.getAllResponseHeaders = function()
  {
   return this.getAllResponseHeader('*');
  };
  
  this.getAllResponseHeader = function(header)
  {
   var ret = '';
   for (var i = 0; i < this._headers.length; i++)
   {
    if (header == '*' || this._headers[i].h == header)
    {
     ret += this._headers[i].h + ': ' + this._headers[i].v + '\n';
    }
   }
   return ret;
  };
  
  this.getResponseHeader = function(header)
  {
   var ret = getAllResponseHeader(header);
   var i = ret.indexOf('\n');
   if (i != -1)
   {
    ret = ret.substring(0, i);
   }
   return ret;
  };
  
  this.setRequestHeader = function(header, value)
  {
   this._headers[this._headers.length] = {h:header, v:value};
  };

  this.open = function(method, url, async, user, password)
  {
   this.method = method;
   this.url = url;
   this._async = true;
   this._aborted = false;
   this._headers = [];
   if (arguments.length >= 3) 
   {
    this._async = async;
   }
   if (arguments.length > 3) 
   {
    opera.postError('XMLHttpRequest.open() - user/password not supported');
   }
   this.readyState = 1;
   if (this.onreadystatechange)
   {
    this.onreadystatechange();
   }
  };
  
  this.send = function(data)
  {
   if (!navigator.javaEnabled())
   {
    alert("XMLHttpRequest.send() - Java must be installed and enabled.");
    return;
   }
   if (this._async)
   {
    setTimeout(this._sendasync, 0, this, data);
   } 
   else
   {
    this._sendsync(data);
   }
  };
  
  this._sendasync = function(req, data)
  {
   if (!req._aborted)
   {
    req._sendsync(data);
   }
  };
  
  this._sendsync = function(data)
  {
   this.readyState = 2;
   if (this.onreadystatechange)
   {
    this.onreadystatechange();
   }
   var url = new java.net.URL(new java.net.URL(window.location.href), this.url);
   var conn = url.openConnection();
   for (var i = 0; i < this._headers.length; i++)
   {
    conn.setRequestProperty(this._headers[i].h, this._headers[i].v);
   }
   this._headers = [];
   if (this.method == 'POST')
   {
   // POST data
    conn.setDoOutput(true);
    var wr = new java.io.OutputStreamWriter(conn.getOutputStream(), this._getCharset());
    wr.write(data);
    wr.flush();
    wr.close();
   }
   // read response headers
   // NOTE: the getHeaderField() methods always return nulls for me :(
   var gotContentEncoding = false;
   var gotContentLength = false;
   var gotContentType = false;
   var gotDate = false;
   var gotExpiration = false;
   var gotLastModified = false;
   for (var i = 0; ; i++)
   {
    var hdrName = conn.getHeaderFieldKey(i);
    var hdrValue = conn.getHeaderField(i);
    if (hdrName == null && hdrValue == null)
    {
     break;
    }
    if (hdrName != null)
    {
     this._headers[this._headers.length] = {h:hdrName, v:hdrValue};
     switch (hdrName.toLowerCase())
     {
      case 'content-encoding': gotContentEncoding = true; break;
      case 'content-length' : gotContentLength = true; break;
      case 'content-type' : gotContentType = true; break;
      case 'date' : gotDate = true; break;
      case 'expires' : gotExpiration = true; break;
      case 'last-modified' : gotLastModified = true; break;
     }
    }
   }
   // try to fill in any missing header information
   var val;
   val = conn.getContentEncoding();
   if (val != null && !gotContentEncoding) this._headers[this._headers.length] = {h:'Content-encoding', v:val};
   val = conn.getContentLength();
   if (val != -1 && !gotContentLength) this._headers[this._headers.length] = {h:'Content-length', v:val};
   val = conn.getContentType();
   if (val != null && !gotContentType) this._headers[this._headers.length] = {h:'Content-type', v:val};
   val = conn.getDate();
   if (val != 0 && !gotDate) this._headers[this._headers.length] = {h:'Date', v:(new Date(val)).toUTCString()};
   val = conn.getExpiration();
   if (val != 0 && !gotExpiration) this._headers[this._headers.length] = {h:'Expires', v:(new Date(val)).toUTCString()};
   val = conn.getLastModified();
   if (val != 0 && !gotLastModified) this._headers[this._headers.length] = {h:'Last-modified', v:(new Date(val)).toUTCString()};
   // read response data
   var reqdata = '';
   var stream = conn.getInputStream();
   if (stream)
   {
    var reader = new java.io.BufferedReader(new java.io.InputStreamReader(stream, this._getCharset()));
    var line;
    while ((line = reader.readLine()) != null)
    {
     if (this.readyState == 2)
     {
      this.readyState = 3;
      if (this.onreadystatechange)
      {
       this.onreadystatechange();
      }
     }
     reqdata += line + '\n';
    }
    reader.close();
    this.status = 200;
    this.statusText = 'OK';
    this.responseText = reqdata;
    this.readyState = 4;
    if (this.onreadystatechange)
    {
     this.onreadystatechange();
    }
    if (this.onload)
    {
     this.onload();
    }
   }
   else
   {
    // error
    this.status = 404;
    this.statusText = 'Not Found';
    this.responseText = '';
    this.readyState = 4;
    if (this.onreadystatechange)
    {
     this.onreadystatechange();
    }
    if (this.onerror)
    {
     this.onerror();
    }
   }
  };
 };
}

// ActiveXObject emulation
if (!window.ActiveXObject && window.XMLHttpRequest)
{
 window.ActiveXObject = function(type)
 {
  switch (type.toLowerCase())
  {
   case 'microsoft.xmlhttp':
    case 'msxml2.xmlhttp':
    case 'msxml2.xmlhttp.3.0':
    case 'msxml2.xmlhttp.4.0':
    case 'msxml2.xmlhttp.5.0':
    return new XMLHttpRequest();
  }
  return null;
 };
}