contextMenu goes off screen

[pdarkness]

[fivelas]

you have to customize bootstrap-year-calendar.js

Find this line: contextMenu.css('left', elt.offset().left + 25 + 'px');

And then customize the value 25 to fit your needs. I did like this for my own need:

var offset=25;
if (elt.offset().left>window.innerWidth-200)
     offset=-200;
                            
contextMenu.css('left', elt.offset().left + offset + 'px');

You should change the value 200 accordingly.
You can do the same for the Height if you encounter that problem.