Hi, I'm starting using the darkmatter free pixelpost template

but I have noticed (with the Web Inspector, a Safari function) that it seems that ALL the thumbnails are loaded when accessing the homepage, which causes a slow homepage of course.
Is there a way to only load all the thumbnails when someone is clicking on "Gallery"? Because I have 441 photos and it takes a long time for people to load the homepage (see
http://www.oscense.com/).
Thanks a lot for your help.