var menuItemTopology = [
  // Level 0
  { 'height': 28
  , 'hide_delay': 150
  , 'expd_delay': 150
  , 'css' : {
       'outer': ['level0_outer_out', 'level0_outer_over']
     , 'inner': ['level0_inner_out', 'level0_inner_over'] }
  },
  
  // Level 1+
  { 'height': 20
  , 'css': {
      'outer' : ['level1_outer_out', 'level1_outer_over']
    , 'inner' : ['level1_inner_out', 'level1_inner_over'] }
  },
    
]