How do I change image size?
1) go to ext/css/mj-template.css
2) go to line 1438 or search the ”.centerBoxContentsNew .product_image img” in the file.
3) remove the with:auto property defined for it.
4) log in to your admin panel of oscommerce.
5) go to configuration -> images.
6) the image height/width you need to change here is “small image width” and “small image height”, default values would be 150 and 80 respectively. You can always change the parameters here as per your requirement. It would always be in pixels.