Regarding to: http://www.kirupa.com/developer/actionscript/drawingboard.htm
I have the following situation:
I have made some kind of color chooser. User can pick a color and the line color will change in the desired color. Easy.
But… the user can also draw OVER the colorpicker, and that is not kewl. 
I have tried to make the drawing area masked, but that didn’t worked out.
I have also tried to “caputer” the drawing area into a seperate mc. instead of the _root. wich the tutorial explaines…
so what is a possible solution to this?