Backport update imminent...
If you're using or considering using JS API Backports please contact "aubergine" via the wz2100.net forums with any bugs or feature requests...
I'm about to do a bit of an overhaul of the backport framework, including adding new "settings" feature (so your script can tweak operation of certain backports) and also fixing up some bugs and adding a few new backports, including the first (and possibly only ever) event backport!
Of particular note is that the filename convention for Backport Scripts will be changing to "backport.<whatever>_vX.Y.js" so keep an eye out for that as it means you'll have to change your include() statements in the next release.