White blocks showing?

Hi guys

OK, i have made a colouring game for a website in flash.

I have managed to keep the whole game down to 1 frame on the timeline which im pretty pleased about.

The problem is, is that when you click print it does not show my pngs as transparent? Why is this? It seems to put a white box around them?

Also, i understand that you can add something like p to the frame that you want to print.

If i wanted to add another frame on the timeline and wanted to print frame 2 as opposed to frame 1, how would i apply this p function?

Hope this makes sense

The link is here:http://www.freemanholland.com/pixie/play