Dynamic Image

i am looking for a tutorial on preloading dynamic images…however im looking at something a little more specific. I would like as the images preload numbers would appear…for instance after the first image loads #1 button would appear…when the second image loads #2 button would appear and so on. You would view the images by clicking on the numbered buttons…im confused on exactly what I should search for…if anyone has an idea of what exactly it would be…or knows of a tutorial that may benefit me…I would really appreciate it…thanks!

Jake