generic keep-alive within Pier

Hi I've been littering my code with javascript keep-alive calls, to ensures that sessions don't timeout when I'm say writing a blog post, or a user is uploading details in one of my custom forms. Thinking about the problem, I noticed that I'm normally within an edit when I'm in a form and could fix the problem generically by derving from PRContentsWidget and overriding the #renderContentOn: method as: renderContentOn: html super renderContentOn: html. self context command isView ifFalse: [ html script: (html jQuery ajax callback: [ "Do nothing" ]; interval: 10 minutes). "self application cache expiryPolicy configuration at: #cacheTimeout" ] The keep alive will then be rendered for all non-view commands. Do others use a similar approach? Cheers Nick