$(document).ready(function(){
	// hovers for navigation bars
	$("tr#navrow a").hover(function(){
		//over
		var sa = $(this).children("img").attr('src').replace(/a\.jpg/, "b.jpg");
		$(this).children("img").attr("src", sa);
	},
	function(){
		//out
		var sa = $(this).children("img").attr('src').replace(/b\.jpg/, "a.jpg");
		$(this).children("img").attr("src", sa);
	});
	// show alt tags as captions
	$('div#content img').each(function(){
		var jimg = $(this);
		var alt = jimg.attr('alt');
		var w = jimg.width();
		jimg.wrap("<div class=\"img\"></div>").after("<div class=\"caption\" style=\"width:" + w + ";\">" + alt + "</div>");
	});
});