Parsing XML with Javascript and outputting a list with additional details

(function($){
$.ajax({
	url: ' /rss/photos-macro.xml',
	dataType: 'xml',
	success: function(data) {
		var items = $(data).find('item'),
			theUl = $('<ul class="thumbs columns clearfix"></ul>');
		$('div#parseHere').append(theUl);
		items.each(function(){
			var _this = $(this),
				theItem = {
					title : _this.find('title').text(),
					thumbnail : _this.find('mediathumbnail:eq(1)').attr('url'),
					thumbnailWidth : _this.find('mediathumbnail:eq(1)').attr('width'),
					thumbLrg : _this.find('mediathumbnail:eq(0)').attr('url'),
					fullImg : _this.find('mediacontent').attr('url'),
					desc : _this.find('mediadescription').text()
				},
				theLi = $('<li></li>'),
				linkElem = $('<a rel="lightbox-myGroup" class="img" lightboxtitle="'+theItem.desc+'" href="'+theItem.fullImg+'"><span class="title">'+theItem.title+'</span></a>'),
				hiddenHover = $('<span class="hidden box"><span class="img"><img src="'+theItem.thumbLrg+'" alt="'+theItem.title+'" width="250p"/></span><span class="title">'+theItem.title+'</span><span class="desc">'+theItem.desc+'</span></span>'),
				thumbElem = $('<span class="imgCont"><img width="'+theItem.thumbWidth+'" src="'+theItem.thumbnail+'" alt="'+theItem.title+'"/></span>');
			thumbElem.prependTo(linkElem);
			linkElem.appendTo(theLi);
			hiddenHover.appendTo(linkElem);
			theLi.appendTo(theUl);
			theUl.children('li:nth-child(4n)').addClass('last');
		});
		
		var thumbs = $('div#parseHere ul li a');
		thumbs.hover(function (){
			$(this).css('z-index','1000').children('span.box').removeClass('hidden');
			$(window).bind('resize',$);
			var containerWidth = $('div#wrapper').width(),
				windowWidth = $(window).width(),
				aPos = $(this).position(),
				aWidth = $(this).width(),
				aHeight = $(this).height(),
				spanBoxWidth = $('a.img span.box').width();
			if((windowWidth - containerWidth)/2 + containerWidth < aPos.left + spanBoxWidth + aWidth) {
				$(this).children('span.box').css({'left':'auto','right':'0'});
			}
		}, function(){
			$(this).css('z-index','10').children('span.box').addClass('hidden');
		});
		thumbs.mouseup(function(){
			$(this).css('z-index',0).children('span.box').addClass('hidden');
		});
		thumbs.lightBox({
			imageLoading:			'/img/lightbox-ico-loading.gif',
			imageBtnPrev:			'/img/lightbox-btn-prev.gif',
			imageBtnNext:			'/img/lightbox-btn-next.gif',
			imageBtnClose:			'/img/lightbox-btn-close.gif',
			imageBlank:				'/img/lightbox-blank.gif',
			containerBorderSize:	10
		});
	}
});
})(jQuery);