Events— 'mouseup' not firing after mousemove

Question

I am trying to drag an image with Javascript (no libraries). I am able to listen to mousedown and mousemove events. For some reason, I am not able

Answer 1

Strangely, I've found that when I set my text as unselectable using the below CSS, that inhibits the mouseup event from firing as well -- perhaps this will help someone else.

-moz-user-select: none;
-khtml-user-select: none;
user-select: none;