I was looking through this because we are also looking at options for multi-module / portal style app.
The thing about postMessage is that it is only supported in FF3, Safari 4, IE8 etc. The JQuery version falls back to a document.location.hash version for other browsers, which ends up in your browser history and collides with the gwt history mechanism. Of course, if you have multiple iframes then browser history is a big problem anyway. J -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to google-web-tool...@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.