## Evaluates other macros.
#macro(eval $_macro)$_macro#end

#macro( displayMenu $menu $level )
  #if ($menu.components.size() > 0)
    ## display top menu
    #menuItem($menu $level)
    #foreach ($menu in $menu.components)
      #local ($menu $level)
        #set ($level = $level+1)
        #if ($menu.components.size() > 0) 
          #eval("#displayMenu($menu $level)")
        #else
          #menuItem($menu $level)
        #end
      #end
    #end
  #else
    #menuItem($menu $level)
  #end
#end