Change CALENDAR_PAGE_JS without override on update

We are trying to style a month view for a custom AI1EC theme we made. We are running into trouble when we change the line height and height for .ai1ec-event in the month view. It seems that app/controller/javascript.php:43 & :67 has chosen calendar.js for CALENDAR_FEEDS_PAGE. In the calendar.js, a margin bottom is being added to .ai1ec-date, which does not work well with the line height and height we give to .ai1ec-event in the month view. It causes some overlap with normal single day events and multiday events. What suggestion would you give for us to be able to change the line-height and height for .ai1ec-event? Can we change calendar.js? If not, is there a function you can suggest for us to add that will define CALENDAR_FEEDS_PAGE differently than defined in app/controller/javascript.php:43 & :67? Your help is much appreciated!