EnotionZ/iDropper — comment on commit 3cd911d95507691c19c4f6e7faedb8e72e863aca
File: iDropper.css line 148
By EnotionZ:

I could have removed the element covering the image and use that underlying image for mouse event binding and be done with (which I did in the beginning). In IE (7 and below I believe) when you try to mousemove with the initial mouseodown being on the image, unless you're moving very slow, the browser thinks you're trying to start a selection and doesn't fire mousemove properly. This stops the mouseup bubbling and screws everything to hell.