I've set it up as client validation.
Forgive me but I'm not sure how to do it, but how would I go about using the any form post as the trigger?
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.