$(document).ready(function(){
	var bigimg = $('#big');
	var thumbs = $('#thumbs img');

	/* preload all big imgs */
	thumbs.each(function(){
		$('<img>').attr('src', this.src.replace(/-thumb/,''));
	});

	/* swap in hovered img */
	thumbs.hover(function(){ bigimg.attr('src', this.src.replace(/-thumb/,'')); }, function(){});
});