Hi Mihaela
Thanks for getting your reply. I am not sure I explained the problem properly.
I have a FTG gallery. I have set the image sizes to 150×150. They are 150×150 as reported in the FTG just like in your link. I can see they are 150×150 if I browse my sites directory.
The problem is if I visit my page the big images download then the 150×150 images download. I can see this by inspecting network traffic in my browser. For performance reasons I only want the 150×150 images to downloads then if someone clicks for light box get the big image. Downloading big images is imo un-necessary and time consumimng unless using the lightbox.
Regards
Mollel