$(document).ready(function () {   
    $('.tree-menu-level-0 li').hoverIntent(  
        function () {  
            //show its submenu  
            $('ul.tree-menu-level-1', this).stop(true, true).slideDown(100);  
        },   
        function () {  
            //hide its submenu  
            $('ul.tree-menu-level-1', this).stop(true, true).slideUp(100);           
        }  
    );  
});