Citrix client deployment from the internet instead of web access server

Good Day,

Web Access version 5.3. I'm trying to accomplish the following:

I would like clients that login to my web access server to be informed there is a newer client available for them to use, but I want to avoid that the client is being downloaded from our own Citrix server (for bandthwidth reasons). Instead, I would like to direct them to http://www.citrix.com/clients to download their client from there.

So I would like the benefit of the automatic detection, but maybe adjust some of the webpage functionality so that the link presented to download the client is not the default one pointing to my web access server, but to citrix download page.

Thanks