Need alternative ways to start a callout

System

Hi everyone,

I have a CGI script 'popup' for my form which displays some external information the user needs. However, presumably because callouts are expected to be used for INPUT, the callout button vanishes when the entire form is read-only. (e.g. when viewing a record not Editing)

I need a way for users to always be able to start this callout, whether:

* Making sure the callout button is always displayed
* Adding a button to the form somehow to trigger a JS function
* Some other clever wizardry.

Any help would be much appreciated.

Mike