How to: Storyboard only start with the conspicuousness of the application in the browser window

In two previous articles, I have described techniques to only start a Storyboard when loading of the Silverlight based application is complete. These techniques help no longer at the latest when the Silverlight application has a small size, part of a larger html page is and is not initially visible, if the html page starts, for example because it is embedded at the bottom of the html page. This