jQuery(document).ready(function() {

$('#nav ul.clearfix').append('<li id=\"last\"></li>');

$('.car-wrapper').hover(function(){
	$(".cover", this).stop().animate({top:'0px'},{queue:false,duration:160});
}, function() {
	$(".cover", this).stop().animate({top:'237px'},{queue:false,duration:160}); // set the 'top' values according to how much content you have in the overlay
});

});