I suggest to factor in the scale, i.e. if you have an image that is 22px but you are only seeing it at 27 percent (as possible i.e. when viewing brackets/src/style/images/active_black.png - very wide and small)  you'd still not see th crosshair, but it would be useful, the mous position is a bit difficult to see.
![screen shot 2013-11-11 at 3 03 47 pm](https://f.cloud.github.com/assets/887904/1517595/a5d743a8-4b25-11e3-9345-6db87f20515d.png)