$(document).ready(function(){
	$(".thumb").attr('id',function(t){
		return "thumb"+t;
	}).each(function(e){
		$(this).hover(
			function(){
				t_src = $("#thumb"+e).attr("src");
				t_alt = $("#thumb"+e).attr("alt");
				
				$("#bigpic").attr({
					src: t_src.replace("pg2","pg"),
					alt: t_alt
				});
			}
		);
	});
});