About Picture Pixelation!

i want to make a flash gallery… there is small preview pics in tmb folder… and big ones in images folder… a php code reads the tmb folder and gets the images into flash… when you click the preview button it gets width and height of the big one and starts to load the big one…

lets come to the real problem… when the small picture gets bigger i want it to show pixel by pixel and when the big one loaded to show it… i want to make effect by this way… But flash makes the small picture smooth when i make it bigger…

i saw this effect in a site but i cant remember its name… if you know the solution or any example about it can you help me…

i think its about quality or aliasing?

Sorry for my bad english :smiley:
Thnx a lot