redirect iframe if page cannot be displayed

[moron3]

Is it possible to use Java to redirect an iframe if the page cannot be displayed or the server is down?

One way I thought of doing it would be to direct the iframe to a page, wait a few seconds, then check the locationName to see if it is blank. If it is, then redirect the iframe to the alternate page. But that's probably cheesy and I don't know how to write the code for it anyway.

[Fubarable]

You should always notify others in your post if this is a crosspost in another forum. Nobody likes repeating the same advice given elsewhere. Thanks.