Load images with transparency

Hi! everybody, Well this is it… I want to create a photo gallery, but I also want to use transparency, moreover I don’t want to animate images one by one, because I would like them to appear when coming and dissappear when going.
I’ve tried with arrays and all that stuff, I also read a tutorial here but I need transparency.
I’m desperate if somebody could help it would be great.
Thanks for reading :sleep: