jQuery(function($) {
	$('.nav li')
			.css( {backgroundPosition: "0 0"} )
			.mouseover(function(){
				$(this).stop().animate({backgroundPosition:"(0 -125)" }, {duration: 600})
			})
			.mouseout(function(){
				$(this).stop().animate({backgroundPosition:"(0 0)"}, {duration: 600})
			})
});