JavaScript - Icemegamenu Help

Hi

I'm trying to create a menu using IceMegaMenu in Joomla. I have a problem (I posted on their forum here) I'm desperate to get an answer to.

Basically, the drop-menu aligns to the side of the button that created it:



Except when the button is too far to the right when it aligns cent



I just want the drop menus to centre all the time.

I'm pretty sure the fix is in this file but although the file is well-commented, I just can't find a way to make the megamenu submenus centred.

I know I should just wait for them to get back to me but have something I want to finish quite urgently and any help would be very greatly appreciated.