var prepRollovers = {
	init : function() {
		$('img.roll').each(function(){
			this.out = new Image(); this.out.src = $(this).attr('src');
			this.over = new Image(); this.over.src = $(this).attr('src').toString().replace(/.gif/i,"_o.gif");
			$(this).hover(function(){
				$(this).attr('src',this.over.src);
			}, function() {
				$(this).attr('src',this.out.src);
			});
		});
	}
}


$(document).ready(function(){
	prepRollovers.init();
});