I have been using processing.js to develop an image marking tool(which allows painting or creating tags on images) .However when i mark some regions on the image after zooming in , the marked region seems to have appeared on some other region of the image too ...I have been using scale function for the zooming . Kindly let me know how to solve this problem .Thanks a lot already :)

P.S : The code works perfectly in processing mode however when i try it on processing js in the browser i get this problem