var MENU_POS = {
   // misure per i tre livelli
   'height': [22, 20, 20],
   'width': [100, 150, 150],
   'block_top': [142+start_y, 22, 5],
   'block_left': [120, 0, 130],
   'top': [0, 21, 21],
   'left': [80, 5, 0],
   'hide_delay': [1500, 1500, 1500],
   'text_align': ['center', 'left', 'left']
};

var MENU_STYLES = {
   // default item state when it is visible but doesn't have mouse over
   'onmouseout': [
      'color', ['#FFFFFF', '#FFFFFF', '#FFFFFF'],
      'background', ['#0C7B85', '#FA1625', '#AE9717'],
      'textDecoration', ['none', 'none', 'none'],
      'fontWeight', ['bold', 'normal', 'normal'],
   ],
   // state when item has mouse over it
   'onmouseover': [
      'color', ['#FFFFFF', '#FFFFFF', '#FFFFFF'],
      'background', ['#5AA7E5', '#FF9C00', '#BDAF60'],
      'textDecoration', ['none', 'none', 'none'],
      'fontWeight', ['bold', 'normal', 'normal'],
   ],
   // state when mouse button has been pressed on the item
   'onmousedown': [
      'color', ['#FFFFFF', '#FFFFFF', '#FFFFFF'],
      'background', ['#5AA7E5', '#5AA7E5', '#5AA7E5'],
      'textDecoration', ['none', 'none', 'none'],
      'fontWeight', ['bold', 'normal', 'normal'],
   ]
};