(function($){
	$(function(){
		var target=$('.main_img h2 a:first');
		target.appendTo(target.parent()).hide().fadeIn(0);
		$('.main_img h2 a').show();
		var timer;
		$('#header_nav ul li').each(function(index){
			var target_name=$(this).attr('id');
			var target_num=target_name.substring('topsnav'.length);
			var link_url=$(this).children('a').attr('href');
			$('.main_img h2').append('<a href="'+link_url+'"><img src="images/main'+target_num+'.jpg" /></a>').children('a:last').hide();
			$(this).hover(function(){
				clearTimeout(timer);
				var target_name=$(this).attr('id');
				var target_num=target_name.substring('topsnav'.length);
				var target=$('.main_img h2 a img[src$="main'+target_num+'.jpg"]').parent();
				target.appendTo(target.parent()).hide().fadeIn(500);
			},function(){
				timer=setTimeout(function(){
					var target=$('.main_img h2 a img[src$="main00.jpg"]').parent();
					target.appendTo(target.parent()).hide().fadeIn(500);
				}, 1000);
			});
		});
		$('.main_img h2').css('position','relative');
		$('.main_img h2 a').css('position','absolute').hover(function(){
			clearTimeout( timer );
			$(this).queue([]).css({ opacity: 1 });
		},function(){
			timer=setTimeout(function(){
				var target=$('.main_img h2 a img[src$="main00.jpg"]').parent();
				target.appendTo(target.parent()).hide().fadeIn(500);
			}, 1000);
		});

	});
})(jQuery);