You really can't use any script triggers with IWP. The only way that you can trip a trigger from a session that uses a Web Browser is to perform a script and then the script can trip script triggers.
Thanks for the quick response. I can't believe that I can't trigger a search in FMP-IWP by means of hitting the "Return" key. This is a basic function (outside of word processors) to trigger an action. What is FMP thinking of?