$(function(){
$('.mainnav a[class!=current]')
	.css( {backgroundPosition: "0px 0px"} )
	.mouseover(function(){
		$(this).stop().animate(
			{backgroundPosition:"(0px -35px)"}, 
			{duration:700,
			easing: 'easeOutExpo'
			})
		})
	.mouseout(function(){
		$(this).stop().animate(
			{backgroundPosition:"(0px 0px)"}, 
			{duration:700,
			easing: 'easeInOutBack'
			})
		})
		
		
		$('.mainnav a.current').css( {backgroundPosition: "0 -35px"} )
});