jQuery.extend({

    createUploadIframe: function(id, uri){

            var frameId = 'jQuery' + id;

            if(window.ActiveXObject) {
                var io = document.createElement('<iframe id="' + frameId + '" name="' + frameId + '" />');

                if(typeof uri== 'boolean'){
                    io.src = 'javascript:false';
                }
                else if(typeof uri== 'string'){
                    io.src = uri;
                }
            }
            else {
                var io = document.createElement('iframe');
                io.id = frameId;
                io.name = frameId;
            }

            io.style.position = 'absolute';
            io.style.top = '-1000px';
            io.style.left = '-1000px';

            document.body.appendChild(io);



            return io;

    },

    ajaxUpload: function(s)
    {
        // TODO introduce global settings, allowing the client to modify them for all requests, not only timeout
        s = jQuery.extend({}, jQuery.ajaxSettings, s);


        var id = new Date().getTime()


        io = jQuery.createUploadIframe(id, s.secureuri);


        // 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 = {}
        if ( s.global )
            jQuery.event.trigger("ajaxSend", [xml, s]);


        // Wait for a response to come back
        var uploadCallback = function(isTimeout)
        {


		function showErrorInfo(e) {
		  //alert(e+":<BR>"+"Источник ошибки: "+((e.number >> 16) & 0x1FFF)+"<BR>"+ "Номер ошибки: "+(e.number & 0xFFFF)+"<BR>Описание ошибки: "+e.description);
		}


        try {

				//alert(io.id);

			 	xml.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:null;

	            xml.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document;

            }

         catch(e)
         {
 			//showErrorInfo(e);
         }



            if ( xml || isTimeout == "timeout") {
                requestDone = true;
                var status;
                try {
                    status = isTimeout != "timeout" ? "success" : "error";
                    // Make sure that the request was successful or notmodified
                    if ( status != "error" ) {
                        // process the data (runs the xml through httpData regardless of callback)


                        var data = jQuery.uploadHttpData( 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);

                jQuery(io).unbind();

                setTimeout(function()
									{	try
										{
											jQuery(io).remove();
											jQuery(form).remove();

										} catch(e)
										{
											xml = null
										}

									}, 100)

            }

        }




     // Timeout checker
        if ( s.timeout > 0 )
        {

        setTimeout(function()
           {
                // Check to see if the request is still happening
                if( !requestDone )
                {
                	uploadCallback( "timeout" );
                }

            }, s.timeout);

        }



        try
        {

         	var frameId = 'jQuery' + id;
            var io = document.getElementById(frameId);

            // Initialize the HTML form properties in case they are
            // not defined in the HTML form.
            s.uploadform.action = s.url;
            s.uploadform.method = 'POST';
            s.uploadform.target = frameId;

            if(s.uploadform.encoding)
            {
                // IE does not respect property enctype for HTML forms.
                // Instead use property encoding.
                s.uploadform.encoding = 'multipart/form-data';
            }
            else
            {
                s.uploadform.enctype = 'multipart/form-data';
            }

            s.uploadform.submit();

        }



        catch(e)
        {
            jQuery.handleError(s, xml, null, e);

        }


  if(window.attachEvent)
  {
            io.attachEvent('onload', uploadCallback);
  }
  else
  {
           io.addEventListener('load', uploadCallback, false);
  }


  return {abort: function () {}};

 },




    uploadHttpData: function( r, type ) {
        var data = !type;
        data = type == "xml" || data ? r.responseXML : r.responseText;

        // If the type is "script", eval it in global context
//       if ( type == "script" )    jQuery.globalEval( data );     // only for jquery 1.1...

        // Get the JavaScript object, if JSON is used.
//        if ( type == "json" )      eval( "data = " + data );     // only for jquery 1.1...

        // evaluate scripts within html
//        if ( type == "html" )        jQuery("<div>").html(data);  // only for jquery 1.1...



        return data;
    }
})