Pass json script to filebrowser constructor

htdocs/artefact/file/index.php

@@ -34,7 +34,7 @@ $copyright = get_field('site_content', 'content', 'name', 'uploadcopyright');
 $javascript = <<<JAVASCRIPT
 
 var copyrightnotice = '{$copyright}';
-var browser = new FileBrowser('filelist');
+var browser = new FileBrowser('filelist', 'myfiles.json.php');
 var uploader = new FileUploader('uploader', 'upload.php', null, null, browser.refresh, browser.fileexists);
 browser.changedircallback = uploader.updatedestination;
 

htdocs/artefact/file/js/filebrowser.js

 var changedir = function () {};
 
-function FileBrowser(element, changedircallback) {
+function FileBrowser(element, source, changedircallback) {
     var self = this;
     this.element = element;
+    this.source = source;
     this.pathids = {'/':null};
     this.cwd = '/';
     if (typeof(changedircallback) == 'function') {
@@ -29,7 +30,7 @@ function FileBrowser(element, changedircallback) {
 
         self.filelist = new TableRenderer(
             self.element,
-            'myfiles.json.php',
+            self.source,
             [
                 self.formatname,
                 'description',