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( xhr, status, e );
        // If we have some XML response text (e.g. from an AJAX call) then log it in the console
        else if(xhr.responseText)
            console.log(xhr.responseText);
    }
})


//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;
//  }
//})