Event.onReady(function() {
  if (!TABLET) {
    var TABLET = {};
  }
  TABLET.showSubMenu = function(el) {
   var list = el.down('ol.submenu');
   if (el.className !== '' && list) {
    list.addClassName('sized');
   }
   el.addClassName('hover');
   if (list) {
     if (!list.hasClassName('sized')) {
       var longestItem = 0;
       list.immediateDescendants().each(function(item){
         if (item.offsetWidth > longestItem) {
           longestItem = item.offsetWidth;
         }
       });
       list.setStyle({'width':longestItem+'px'});
       list.addClassName('sized');
     }
   }
  };
  TABLET.hideSubMenu = function(el) {
    el.removeClassName('hover');
  };
  
  $$('div.topnav ol.menu li').each(function(el){
    el.onmouseover = function(){
      TABLET.showSubMenu(this);
    }
    el.onmouseout = function(){
      TABLET.hideSubMenu(this);
    }
  }); 
  
  $$('div.topnav ol').each(function(el) {
    childItems = el.getElementsByTagName('li');
    if (childItems.length > 0) {
      childItems[0].addClassName('first-child');
    }
  });
});