[xwiki-devs] How to load GWT application on Xwiki pages?

Hi Everyone! I have read this document "Writing GWT applications in XWiki" ( http://dev.xwiki.org/xwiki/bin/view/Drafts/WritingGWTApplicationsInXWiki) And I know how to develop GWT module for xwiki now. I also have read the document "WYSIWYG Editor Module" ( http://code.xwiki.org/xwiki/bin/view/Modules/WysiwygEditorModule). I followed the instruction which tried to integrate the WYSIWYG editor(GWT application) in wiki pages, and I put the following code in my wiki editor: "{{html}} <script type="text/javascript" src="XWikiWysiwyg.js"> alert('WYSIWYG code is loaded!'); </script> <textarea id="demo"></textarea> <script type="text/javascript"> Wysiwyg.onModuleLoad(function() { new WysiwygEditor({hookId:'demo'}); alert('WYSIWYG code is loaded!'); }); Wysiwyg.onModuleLoad(function() { editor = new WysiwygEditor({hookId: 'demo'}); }); }); </script> {{/html}}" After saved, it only display a blank text area without any sign of WYSIWYG editor, also there is no alart 'WYSIWYG code is loaded!' popup. Can you help me figure it out what is wrong with it? I am planing to develop a tree view using GWT to display Design Rationale Element. Could you give me some ideas of after my development, how can I embeded the GWT application into Xwiki pages and interact with the GWT application? Thank you very much! Leon