var $j = jQuery.noConflict();

$j(document).ready(function () {	
	
	$('#nav li').hover(
		function () {
			//show its submenu
			$j('ul', this).slideDown(100);

		}, 
		function () {
			//hide its submenu
			$j('ul', this).slideUp(100);			
		}
	);
	
});