Hello Christian,
Frankly, I don't think your request has anything to do with any Telerik control.
The browser status bar is there to show status messages *from the browser*, not from the web page author. A web page is not the application, the browser is the application. The web page is the data.
This has been thrashed about endlessly in the developers newsgroups lately. The general consensus is that, when viewers hover over a link they sometimes look at the status bar to see where the link is going to send them to. If something other than a URL appears then they get suspicious and just don't go there.
In addition, the status bar manipulation is turned off by default (see attached screenshot), so the provided JS won't work.
Still, please find below the modified code snippet that will work with RadPanelBar.
Kind regards,
Paul
the Telerik team