$(document).ready(
           function(){
                $('#logo-homepage-link').mouseenter(
                    function(){
                          $('.dropdown-main').show();
                    });
                $('#logo-homepage-link').mouseleave(
                    function(){
                          $('.dropdown-main').hide();
                    });
                $('.dropdown-main').mouseenter(
                    function(){
                          $('.dropdown-main').show();
                    });   
                $('.dropdown-main').mouseleave(
                    function(){
                          $('.dropdown-main').hide();
                    });               
       });