// initialise plugins
    $(document).ready(function(){
      $("ul.sf-menu").supersubs({
        minWidth:    11,   // minimum width of sub-menus in em units
        maxWidth:    27,   // maximum width of sub-menus in em units
        extraWidth:  1     // extra width can ensure lines don't sometimes turn over
        // due to slight rounding differences and font-family
      }).superfish({
        animation:   {opacity:'show',height:'show',width:'show'},
        speed: 'fast'
      });  // call supersubs first, then superfish, so that subs are
      // not display:none when measuring. Call before initialising
      // containing tabs for same reason.
    });