I've found a bit of a problem, for me, in the webviewer. It of course involves iTunes and Google's attempt to take over the world.
OK, if I watch an YouTube (and thanks for the insight) I can't grab the url if I select one of the checkboard tubes offered up after the current one shows. If I am viewing a web page and click on a url link and open the new page, I can grab that page using the function below. I think it is Google messing around and I'll blog about that later.
GetLayoutObjectAttribute ( "WebViewer" ; "Source" ) will return the url of the current web page, unless it is a YouTube as described above.
Google may be adding a hidden page since my scripts keep capturing something that sounds like one:
YouTube - Broadcast Yourself
Hmm, the sourcecode shows a lot of HTML5 stuff, is Filemaker WebViewer using HTML5?
Also, does the WebViewer use Flash. I turned off all of the Flash privacy violations.