text: jQuery.extend({	
  
    createUploadIframe: function(id, uri)
  	{
  			//create frame
        var frameId = 'jUploadFrame' + id;
        var iframeHtml = '<iframe id="' + frameId + '" name="' + frameId + '" style="position:absolute; top:-9999px; left:-9999px"';
  			if(window.ActiveXObject)
  			{
          if(typeof uri== 'boolean'){
  iframeHtml += ' src="' + 'javascript:false' + '"';
  
          }
          else if(typeof uri== 'string'){
  iframeHtml += ' src="' + uri + '"';
  
          }	
  			}
  			iframeHtml += ' />';
  			jQuery(iframeHtml).appendTo(document.body);
  
        return jQuery('#' + frameId).get(0);			
    },
    createUploadForm: function(id, fileElementId, data)
  	{
  		//create form	
  		var formId = 'jUploadForm' + id;
  		var fileId = 'jUploadFile' + id;
  		var form = jQuery('<form action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>');	
  		if(data)
  		{
  			for(var i in data)
  			{
  				jQuery('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form);
  			}			
  		}		
  		var oldElement = jQuery('#' + fileElementId);
  		var newElement = jQuery(oldElement).clone();
  		jQuery(oldElement).attr('id', fileId);
  		jQuery(oldElement).before(newElement);
  		jQuery(oldElement).appendTo(form);
  		
  		//set attributes
  		jQuery(form).css('position', 'absolute');
  		jQuery(form).css('top', '-1200px');
  		jQuery(form).css('left', '-1200px');
  		jQuery(form).appendTo('body');		
  		return form;
    },
  
    ajaxFileUpload: 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()    
  		var form = jQuery.createUploadForm(id, s.fileElementId, (typeof(s.data)=='undefined'?false:s.data));
  		var io = jQuery.createUploadIframe(id, s.secureuri);
  		var frameId = 'jUploadFrame' + id;
  		var formId = 'jUploadForm' + id;		
      // 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)
  		{			
  			var io = document.getElementById(frameId);
        try
  			{				
  				if(io.contentWindow)
  				{
   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;
  
  				}else if(io.contentDocument)
  				{
   xml.responseText = io.contentDocument.document.body?io.contentDocument.document.body.innerHTML:null;
          	xml.responseXML = io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document;
  				}	
        }catch(e)
  			{
  				jQuery.handleError(s, xml, null, 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)
  					{
  						jQuery.handleError(s, xml, null, e);
  					}				
  
  				}, 100)
  
          xml = null
  
        }
      }
      // 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 form = jQuery('#' + formId);
  			jQuery(form).attr('action', s.url);
  			jQuery(form).attr('method', 'POST');
  			jQuery(form).attr('target', frameId);
        if(form.encoding)
  			{
  				jQuery(form).attr('encoding', 'multipart/form-data');   			
        }
        else
  			{	
  				jQuery(form).attr('enctype', 'multipart/form-data');			
        }			
        jQuery(form).submit();
  
      } catch(e)
  		{			
        jQuery.handleError(s, xml, null, e);
      }
  		
  		jQuery('#' + frameId).load(uploadCallback	);
      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 );
      // Get the JavaScript object, if JSON is used.
      if ( type == "json" )
        eval( "data = " + data );
      // evaluate scripts within html
      if ( type == "html" )
        jQuery("<div>").html(data).evalScripts();
  
      return data;
    },
    
    handleError: function( s, xhr, status, e ) {
  	    // If a local callback was specified, fire it
  	    if ( s.error ) {
  	        s.error.call( s.context || window, xhr, status, e );
  	    }
  
  	    // Fire the global callback
  	    if ( s.global ) {
  	        (s.context ? jQuery(s.context) : jQuery.event).trigger( "ajaxError", [xhr, s, e] );
  	    }
  	}
  })
  