Interactive Cube Dragon

I made a interactive cube dragon for you.

The mouse XY pos controls the XYZ turning speeds.  The Mouse Wheel controls and the speed.  
This may seen very noobish, but how do you use the mouse wheel without having to click on the screen first?  

If it gets away from you CLICK on the screen.
I haven't changed the mouse input to work with dynamic screen sizes so full screen is probably best.