$(document).ready(function(){
	
	// move nav active background
	var	active = $('.firstlevel-active');
	
		var parent = $('#nav');
		var left = $('.firstlevel-active').parent('li').position().left - parent.position().left;
		
		parent.css( 'background-position', left );
		
		
	$('#nav li').hover(
		function(){
			$(this).children('ul').show();
		},
		function(){
			$(this).children('ul').hide();
		}
	);

	
});