How To Automatically Start iMacros Javascript Upon Browser Loading

This question is specific to the iMacros suite in particular.

What is the best way to go about automatic开发者_如何学JAVAally starting a javascript file that controls my macros inside firefox?

Basically, I have an imacros.js file that calls a series of imacros.iim files. How can I run this javascript automatically?

http://wiki.imacros.net/iMacros_for_Firefox#Command_Line_Support has been working for me, though first I launch firefox, pause so imacros can load, and then "relaunch" my script as described, which opens in the already open and loaded imacros.