I can zoom in beyond the maximum limit and dwell into the microscopic world

This bug appears on a mac with safari. Sometime when I click, it doesn't. It zooms in or out (probably mouse settings). When it zooms in I can go beyond the maximum limit and I cann't go back or play. Restarting the game is the only option.

And..

The login policy is not consistent throughout the browser platforms.
Firefox can remember my credentials
Safari reacts on the tab -> tab -> enter sequence (which is nice)
IE doesn't have either.

And..

Thanks for taken up my last bug... the game runs smoothly now on the mac with safari. (didn't try it on firefox yet)

no bug, I found the problem. When you double click, you zoom into the micro world. When you double click again, you zoom out and continue to play