Unassigned Triggers

I have a quick question relating to unassigned triggers.  I'm trying to catch a variable from JavaScript when the Story initially loads.  I created a trigger that is not assigned to any particular object (switch "Object:" to "unassigned") and it works perfectly, however, now I can not seem to find that trigger in order to edit it.  Is there a way I can edit that trigger after creation?  I can't seem to find a list of all triggers anywhere.  Any help would be greatly appreciated.