var swfu;
        var jsTimer = false;
        var error_send = false; // Indicates whether swfUpload has already been stopped because of a form error        
        var upload_complete = false; // All queued files uploaded?
        var queue_complete = 0; // contains number of queued and successfully uploaded images
        var count_failed_uploads = 0; // Number of failed uploads

		window.onload = function() {
			var settings = {
				flash_url : "/swfupload/swfupload.swf",
				upload_url: "",	// Relative to the SWF file
        post_params: {"PHPSESSID" : "" , "nodetype" : "", "fieldname" : ""},
        file_post_name: "Filedata",
				file_size_limit : "",
				file_types : "",
				file_types_description : "Only images",
				file_upload_limit : "",
				file_queue_limit : "0",
				custom_settings : {
					progressTarget : "fsUploadProgress",
					cancelButtonId : "btnCancel"
				},
				debug: false,
        
        // Button settings				
				button_width: "36",
				button_height: "37",
				button_placeholder_id: "spanUploadButton",
        button_image_url: "/swfupload/select_images.png",	// Relative to the Flash file
        button_cursor: SWFUpload.CURSOR.HAND,

				// The event handler functions are defined in handlers.js
        file_queued_handler : fileQueued,
				file_queue_error_handler : fileQueueError,
				file_dialog_complete_handler : fileDialogComplete,
				upload_start_handler : uploadStart,
				upload_progress_handler : uploadProgress,
				upload_error_handler : uploadError,
				upload_success_handler : uploadSuccess,
				upload_complete_handler : uploadComplete,
				queue_complete_handler : queueComplete	// Queue plugin event
			};            
			swfu = new SWFUpload(settings);	     
          
    };
         
         function startUploadProcess() {
           var redirect_url = "";
           var imagefield_required = ;
           
             if (!upload_complete) {  
                // Reset all variables and indicators
                error_send = false;
                count_failed_uploads = 0;
                if (isNaN(document.getElementById('form_errors')))
                    document.getElementById('form_errors').value = '0';
                if (isNaN(document.getElementById('num_queued_images')))
                    document.getElementById('num_queued_images').value = '1'; // Pretend that there's at least one image in queue so that it works               
            
                // return warning if no images has been selected yet
                if (swfu.getStats().files_queued == 0) {                  
                  // only create gallery node without any images, if field is not required
                  if (!imagefield_required) {
                    // new node
                    result = confirm(Drupal.t('No images have been selected yet.') + ' ' + Drupal.t('If you continue (OK), a node without any images will be created.\n If you want to add some images to queue, click "Cancel" and use the icon on the left to queue some images.'));
                  } else {
                    // node is edited
                    result = false;
                    alert(Drupal.t('No images have been selected yet.') + ' ' + Drupal.t('Please click the icon on the left to queue some images.'));
                  }
                  // user wants to create a node without any images ... ok =)
                  if (result && !jsTimer)
                    document.getElementById('edit-submit').click();
                }
                
                // hey, let's go =)
                swfu.startUpload();  
             }            
         }
         
         function UploadComplete(numFilesUploaded) {
             // Provide a second step to be able to edit captions of image if supported             
             var redirect_url_main = "";
             var redirect_url_updated = "";
             if (isNaN(document.getElementById('redirect_url'))) {
               // updated redirect url
               redirect_url_updated = document.getElementById('redirect_url').value;
             }
             
             // user is allowed to enter preview page
             if (redirect_url_main != "" && numFilesUploaded > 0) {
                 upload_complete = true;
                 // Disable Select button
                 swfu.setButtonDisabled(true);
                 
                 // if available, update our redirect url
                 if (redirect_url_updated != "")
                   redirect_url_main = redirect_url_updated;
                                  
                 try {
                   var url_next = '<a href="' + redirect_url_main + '">' + Drupal.t('next step') + '</a>';
                   document.getElementById('startuploadbutton').value = Drupal.t('Next step');
                   document.getElementById('startuploadbutton').onclick = function() {fupload_redirect(redirect_url_main);};
                   document.getElementById('divStatus').innerHTML = (Drupal.formatPlural(numFilesUploaded, '1 file uploaded in queue.', '@count files uploaded in queue.') + ' ' + Drupal.t('Enter the !link to be able to edit all captions.', { '!link': url_next }));
                   document.getElementById('imagepreviewlistbutton').style.visibility = 'visible';
                   document.getElementById('imagepreviewlistbutton').onclick = function() {fupload_redirect(redirect_url_main);};
                   
                   // if node is edited, change save button to "next step" button and remove other buttons
                   //document.getElementById('edit-submit').value = Drupal.t('Next step');
                 }
                 catch(err) {
                   // not interesting in this case
                 }
             }
             
             // no access to preview page: redirect directly to newly created nodeName
             if (redirect_url_main == "" && numFilesUploaded > 0)
               fupload_redirect();
             
         }