1)Download the archive with an addon;
2)Extract the archive to some folder;
3)Copy the “addons” folder from the archive to your site root; or you can just copy the “cs_image_preview” folder from “addons” to root/addons/;
4)Copy the “customer” folder from “skins” to root/skins/current_skin_name/. All the necessary files will be inserted into the template automatically as well;
5)Go to the administrator section Administrations->Addons, locate the “CS.Image Preview” module, and hit the “Install” button;
6)The module is successfully installed.
7)If you want to set maximum height or width of zoomed image you should go to the administrator section Administrations->Addons, locate the “CS.Image Preview” module, hit the “edit” button, choose "Limit image size" checkbox and set your width and height values.