Combine 2 pictures and make one only visible when highlighted <Updated>

It creates a picture which contains a visible picture and a invisible picture. when it is highlighted in a web browser it will reveal the hidden picture. This is the upgraded version of the my old submition. It uses setpixel and get pixel api so, it is a lot faster than the old one. Please leave me a comment..i also need some one to help me with a problem regarding the setpixel api; the api uses pixel while the vb uses point.. so how do i make the progressbar accurate.