Why do you need maths? RectsOverlap, ImageRectOverlap, ImageRectCollide, ImagesOverlap and ImagesCollide should suffice.
Well.. that's an excellent point you know. I can't use those commands since I'm using SpriteCandy but that lib has similar commands which I for some reason managed to completely overlook. Think I need a vitamine injection or something cause my brain's obviously not working right these days. Thanks for the heads up, I should be able to figure out something good now.