Linking Problem

I am working on a real estate site and we are linking to the clients main site to view all of her listings (she did not want to do the custom app that would put the listing on her site) I am using frames to put in the listing into our site. The problem is that my link dies every so often because the page changes and updates, I think they use asp to get all the listing that my client uploads to an idx database.

They use java to get the listing. so what im asking is there any way to keep my listings link in my site up to date.

Here is the old page where we are linking, to get listing go to the bottom and click on “all my listings” in yellow, that is the page we are linking to and that keeps on changing.

Any suggestions would be great help. Thanks