(function($){

	$(document).ready(function(){
		// set rollover.
		$('img[@class=over]')
			.hover(
				function(){
					this.src = this.preloaded.src;
				},
				function(){
					this.src = this.src.replace(/^(.+)_on(\.[a-z]+)$/, '$1$2');
				}
			)
			.each(function(){
				this.preloaded = new Image();
				this.preloaded.src = this.src.replace(/^(.+)(\.[a-z]+)$/, '$1_on$2');
			});

		// set ON status.
		$('img[@class=on]').each(function(){
			this.src = this.src.replace(/^(.+)(\.[a-z]+)$/, '$1_on$2');
		});

		// open a external links in new window.
		$('a[@rel=external], a.open').click(function(){
			window.open(this.href, '_blank');
			return false;
		});

		// open popup.
		$('a.popup').click(function(){
			window.open(this.href, 'popup', 'location=yes,resizable=yes,scrollbars=yes,status=yes,toolbar=no,width=550,height=600');
			return false;
		});

		// open popup for print.
		$('a.print-popup').click(function(){
			window.open(this.href, 'printPopup', 'location=yes,resizable=yes,scrollbars=yes,status=yes,toolbar=no,width=750,height=800');
			return false;
		});
		// open popup for fortune.
		$('#sidebar01 div.campaign a.fortune').click(function(){
			window.open(this.href, 'popup', 'location=yes,resizable=yes,scrollbars=yes,status=yes,toolbar=no,width=715,height=730');
			return false;
		});

		(function(){
			var items = $('#sidebar01 div.news h2');
			if (items.length > 1) {
				$(items)
				.hide()
				// show an item at random.
				.eq(Math.floor(Math.random() * items.length))
				.show()
				.end()
				;
			}
		})();
	});

})(jQuery);