$(function() 
	{
		$(".center_lighter").css("opacity","0");
		$(".lighter").css("opacity","0");
		$(".lighter_fast").css("opacity","0");
	});

$(function() 
	{
		$(".center_url").hover(function () 
			{
				$(".center_lighter").stop().animate({opacity: 1 }, "slow");
			},
		function () 
			{
				$(".center_lighter").stop().animate({opacity: 0 }, "slow");
			});
	});

$(function() 
	{
		$(".lighter").hover(function () 
			{
				$(this).stop().animate({opacity: 1 }, "slow");
			},
		function () 
			{
				$(this).stop().animate({opacity: 0 }, "slow");
			});
	});

$(function() 
	{
		$(".lighter_fast").hover(function () 
			{
				$(this).stop().animate({opacity: 1 }, "fast");
			},
		function () 
			{
				$(this).stop().animate({opacity: 0 }, "fast");
			});
	});