efficient way to compare 2 images?

[madscijr]

Glad someone found and liked it.  I don't think anyone else paid much attention to me, with the code posted.  I was typing in invisible ink once again. 

Not at all! Just been a little busy with life, but I have been lurking and bookmarking your and others' interesting and useful contributions, for when I get more time to get back to some coding! I was in the middle of making a vector sprite editor for that spacewar game when things just got to be too much with the holidays, work, etc. I'll get back to it, but meanwhile keep up the good work!!