I have a movieclip in the background (bkgd_mc) that has the alpha fading in and out when rolled over with mouse. This effect is created with actionscript using tween class and ROLL_OVER and ROLL_OUT mouse events.
On an upper layer, I have another movieclip (menu_mc) that has a mask applied to it so it can drop in and out of view (animation created using tween classs, and triggered by a button).
Even though the mask is only applied to the menu_mc, it seems to be disabling the 'trigger' area of bkgd_mc wherever the mask overlaps it.
When I remove the mask, the rollover effect on bkgd_mc works just fine on the entire area of the movieclip. How can I avoid this conflict, yet still keep the mask I need applied to menu_mc?
See attached files: PNG file shows placement of mask; SWF file demonstrates problem on bottom right image... should only convert back to black and white when roll out occurs, but if you mouse around upper area of image where mask is overlapping, the tween effects happen when they shouldn't.