I bought a theme from themebrain site and installed it. Some of the images for the theme are stored inside /sites/default/files/customs/. So in image tags, I refer to the source location as "sites/default/files/customs/xxx.png". However, those image are not loading. I changed the directory permission recursively to 777, but that does not resolve the issue either. But images inside /sites/all/themes/tb_travel/ load just fine though. If anyone could guide me to right direction, I would highly appreciate it.