Create a Glow in dark effect on images

Hi everybody, I am starting a new business in selling online posters. We have a couple of standard posters to choose from or people can upload their own image. Our posters are special because of the special printing technique we use that makes them lightening up in the dark. See for a couple of examples ([login to view URL]) images in the attachment. What a need is a solution that I can use online that digitally creates the glow in the dark effect without printing it out first. I am not sure how to accomplish this but what I eventually need to see is a picture on a wall during daylight and the digitally enhanced version of the picture in the dark and presented on the website like this. [login to view URL] First solution is to do it manually in, for example in Photoshop. Somebody witch some Photoshop skills delivers me an example and a howto so I can do it myself. Even beter is to have it in an tool that I can place on my site that lets me upload an image and creates and shows the “glow in the dark” version automatically. Hope someone understands what I need and can help me out with this one. Good luck and many thanks in advance. Geordy