$(document).ready(function(){
	// hovers for navigation bars
	$("div#side_navigation a").hover(function(){
		//over
		var sa = $(this).children("img").attr('src').replace(/\.png/, "_on.png");
		$(this).children("img").attr("src", sa);
		$('div#side_nav_label').html($(this).children('img').attr('alt'));
	},
	function(){
		//out
		var sa = $(this).children("img").attr('src').replace(/_on\.png/, ".png");
		$(this).children("img").attr("src", sa);
		$('div#side_nav_label').html('');
	});
	// show alt tags as captions
	$('div#image_column a').lightBox({
		overlayBgColor : '#141',
		imageLoading : '/v25/images/lightbox/lightbox-ico-loading.gif',
		imageBtnClose : '/v25/images/lightbox/lightbox-btn-close.gif',
		imageBtnPrev : '/v25/images/lightbox/lightbox-btn-prev.gif',
		imageBtnNext : '/v25/images/lightbox/lightbox-btn-next.gif'
	});
});