New photogallery

hey guys, im making a new photogallery for some of my work. you can see the current site at
www.creativejuggernauts.com/daniel

in any case, im wondering if you think i need a preloader for all those photos and if so, what would the code look like to preload external jpgs? i know that question was asked before but all the threads i looked through seemed kind of esoteric. any help is appreciated.