Is there a relatively easy way to check whether all the mandatory fields are filled in before saving the form? I've seen that the "Submit" button does that but I wnat to save the form, not submit it via email. Thanks!
Building on Thomas's suggestion, you could place that line of script in the pre-save event for the form. That should accomplish what you want to happen.
Works like a charm -- thanks. I put it on the MouseEnter event of the button so that it fires before the user even has the chance to trigger the save. That way the user could save what they've got and come back later and complete it (assuming that the form has the Reader extensions added).