$(document).ready(function(){
    centerMenu();

    var submenu = $('.submenu ul', $('.parent li.active'));
    if(submenu.length != 0){
        $('#submenu').append(submenu.clone());                
    }

    
    $('.parent li').hover(function(){
        $('#submenu ul').remove();
        var submenu = $('.submenu ul', $(this));
            if(submenu.length != 0){
                $('#submenu').append(submenu.clone());                
            }
    }); 
    
});

$(window).resize(function(){
    centerMenu();
});

    /* center menu according to the content */
    function centerMenu(){
        p =  $('.parent');
        p.css('padding-left', $('#content').offset().left+26+'px'); /** padding(instead of margin) used because of ie6 */      
    }