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			}
		}

		// Watch for a new set of requests
		if ( s.global && ! jQuery.active++ )
			jQuery.event.trigger( "ajaxStart" );

		var requestDone = false;

		// Create the request object
		var xml = new XMLHttpRequest();

		// Open the socket
		xml.open(s.type, s.url, s.async);

		// Set the correct header, if data is being sent
		if ( s.data )
			xml.setRequestHeader("Content-Type", s.contentType);

		// Set the If-Modified-Since header, if ifModified mode.
		if ( s.ifModified )
			xml.setRequestHeader("If-Modified-Since",
				jQuery.lastModified[s.url] || "Thu, 01 Jan 1970 00:00:00 GMT" );

		// Set header so the called script knows that it's an XMLHttpRequest
		xml.setRequestHeader("X-Requested-With", "XMLHttpRequest");

		// Make sure the browser sends the right content length
		if ( xml.overrideMimeType )
			xml.setRequestHeader("Connection", "close");
			
		// Allow custom headers/mimetypes
		if( s.beforeSend )
			s.beforeSend(xml);
			
		if ( s.global )
		    jQuery.event.trigger("ajaxSend", [xml, s]);

		// Wait for a response to come back
		var onreadystatechange = function(isTimeout){
			// The transfer is complete and the data is available, or the request timed out
			if ( xml && (xml.readyState == 4 || isTimeout == "timeout") ) {
				requestDone = true;
				
				// clear poll interval
				if (ival) {
					clearInterval(ival);
					ival = null;
				}
				
				var status;
				try {
					status = jQuery.httpSuccess( xml ) && isTimeout != "timeout" ?
						s.ifModified && jQuery.httpNotModified( xml, s.url ) ? "notmodified" : "success" : "error";
					// Make sure that the request was successful or notmodified
					if ( status != "error" ) {
						// Cache Last-Modified header, if ifModified mode.
						var modRes;
						try {
							modRes = xml.getResponseHeader("Last-Modified");
						} catch(e) {} // swallow exception thrown by FF if header is not available
	
						if ( s.ifModified && modRes )
							jQuery.lastModified[s.url] = modRes;
	
						// process the data (runs the xml through httpData regardless of callback)
						var data = jQuery.httpData( xml, s.dataType );
	
						// If a local callback was specified, fire it and pass it the data
						if ( s.success )
							s.success( data, status );
	
						// Fire the global callback
						if( s.global )
							jQuery.event.trigger( "ajaxSuccess", [xml, s] );
					} else
						jQuery.handleError(s, xml, status);
				} catch(e) {
					status = "error";
					jQuery.handleError(s, xml, status, e);
				}

				// The request was completed
				if( s.global )
					jQuery.event.trigger( "ajaxComplete", [xml, s] );

				// Handle the global AJAX counter
				if ( s.global && ! --jQuery.active )
					jQuery.event.trigger( "ajaxStop" );

				// Process result
				if ( s.complete )
					s.complete(xml, status);

				// Stop memory leaks
				if(s.async)
					xml = null;
			}
		};
		
		// don't attach the handler to the request, just poll it instead
		var ival = setInterval(onreadystatechange, 13); 

		// Timeout checker
		if ( s.timeout > 0 )
			setTimeout(function(){
				// Check to see if the request is still happening
				if ( xml ) {
					// Cancel the request
					xml.abort();

					if( !requestDone )
						onreadystatechange( "timeout" );
				}
			}, s.timeout);
			
		// Send the data
		try {
			xml.send(s.data);
		} catch(e) {
			jQuery.handleError(s, xml, null, e);