my %hash = ( 
    Main => { 
        Reviews => {
            'PC'   => A_LINK_OR_CALLBACK_FUNCTION,
            'PS2'  => A_LINK_OR_CALLBACK_FUNCTION,
            'XBox' => A_LINK_OR_CALLBACK_FUNCTION,
         }, 
         News => A_LINK_OR_CALLBACK_FUNCTION,
    },
    'Other Menu' => {
        Other => {
            Sub => {
                Menus => A_LINK_OR_CALLBACK_FUNCTION,
            },
        },
    },      
);