The zoom ratio will be increased and decreased if you click and drag upwards/downwards your mouse. The zoom window will be increased and decreased if you click and drag to the right/left your mouse as well. Have you found any open source image magnifier that you would like to share with us too?
Requirements: Internet Explorer 6+, Firefox 2, Opera, Safari 2, Konqueror 3.5.6
License: Creative Commons 3.0 License