[Jean le Chauve]

Moi, moi, msieur
Z'avez pas bien regardé la css :

Code :

/* The magic - set to work for up to a 3 level menu, but can be increased unlimited, for fourth level add
#primary-nav li:hover ul ul ul,
#primary-nav li.menuparenth ul ul ul,
*/
#primary-nav ul,
#primary-nav li:hover ul,
#primary-nav li:hover ul ul,
#primary-nav li.menuparenth ul,
#primary-nav li.menuparenth ul ul {
    display: none;
}
/* for fourth level add
#primary-nav ul ul ul li:hover ul,
#primary-nav ul ul ul li.menuparenth ul,
*/

Faut enlever les commentaires