var TREE_NODES = [
  ['PART 1 - PROPERTIES OF OIL', null, null, 
    ['Properties of Oil', null, null, 
      ['What is oil?', null, null], 
      ['What are hydrocarbons?', null, null], 
      ['Types of oil', null, null], 
      ['Classification of oils (AP number)', null, null]], 
    ['Crude Oil', null, null, 
      ['Light crude oil', null, null], 
      ['Waxy crude oil', null, null], 
      ['Heavy crude oil', null, null]], 
    ['Oil Products', null, null, 
      ['Gases', null, null], 
      ['Gasoline and light distillates', null, null], 
      ['Kerosene and middle distillates', null, null], 
      ['Heavy fuel oils and distillates', null, null], 
      ['Asphalt', null, null]]], 
  ['PART 2 - BEHAVIOUR OF OIL ON WATER', null, null, 
    ['Phases of Oil on Water', null, null, 
      ['Initial phase', null, null], 
      ['Intermediate phase', null, null], 
      ['Final phase', null, null]], 
    ['Behaviour of Oil on Water', null, null, 
      ['Evaporation', null, null], 
      ['Spreading', null, null], 
      ['Movement by wind', null, null], 
      ['Movement by currents', null, null], 
      ['Forecasting motion and trajectories', null, null]], 
    ['Behaviour of Oil in Water', null, null, 
      ['Sinking', null, null], 
      ['Dispersion', null, null], 
      ['Emulsification', null, null]]], 
  ['PART 3 - SPILL RESPONSE EQUIPMENT and DISPERSANTS', null, null, 
    ['Booms', null, null, 
      ['Basic operating principles', null, null], 
      ['Classification oil booms', null, null], 
      ['Description of Boom Types', null, null, 
        ['Ocean or open water boom', null, null], 
        ['Nearshore, river or protected water boom', null, null], 
        ['Harbour or calm water boom', null, null], 
        ['Lightweight utility boom', null, null], 
        ['Specialty booms', null, null]], 
      ['Applications of Boom', null, null, 
        ['Deflection', null, null], 
        ['Containment', null, null], 
        ['Collection', null, null], 
        ['Protection and prevention', null, null], 
        ['Beach barriers', null, null], 
        ['Containment by air and water pressure', null, null]]], 
    ['Skimmers', null, null, 
      ['Classification by type', null, null], 
      ['Classification by use', null, null], 
      ['Basic Operating Principles', null, null], 
      ['Suction Skimmers', null, null, 
        ['Vacuum, manual', null, null], 
        ['Vacuum, passive', null, null]], 
      ['Gravity Skimmers', null, null, 
        ['Weir skimmers', null, null], 
        ['Submersion skimmers', null, null], 
        ['Vortex skimmers', null, null]], 
      ['Adhesion or Oleophilic Skimmers', null, null, 
        ['Disc skimmers', null, null], 
        ['Belt skimmers', null, null], 
        ['Drum skimmers', null, null], 
        ['Rope skimmers', null, null], 
        ['Brush skimmers', null, null]], 
      ['Absorption Skimmers', null, null]], 
    ['Pumps', null, null, 
      ['Types and classification of pumps', null, null], 
      ['Trash pumps', null, null], 
      ['Centrifugal pumps', null, null], 
      ['Reciprocating pumps', null, null], 
      ['Peristaltic pumps', null, null], 
      ['Screw pumps', null, null], 
      ['Air driven pumps', null, null]], 
    ['Vessels', null, null, 
      ['Classification and uses', null, null], 
      ['Command boats', null, null], 
      ['Work boats', null, null, 
        ['Flat bottom', null, null], 
        ['Inflatable', null, null], 
        ['Boston Whaler', null, null]], 
      ['Utility barges', null, null], 
      ['Large barges', null, null], 
      ['Ships', null, null]]], 
  ['PART 4 - DISPERSANTS', null, null, 
    ['What are Dispersants?', null, null], 
    ['History of Dispersant Development', null, null, 
      ['Early dispersants', null, null], 
      ['Second generation dispersants', null, null], 
      ['Present generation dispersants', null, null]], 
    ['Use of Dispersants', null, null, 
      ['Near shore', null, null], 
      ['Offshore', null, null], 
      ['Confined areas', null, null], 
      ['Special (ecologically sensitive) areas', null, null]], 
    ['Applications of Dispersants', null, null, 
      ['Via vessels', null, null], 
      ['Via aircraft', null, null], 
      ['Hand-held sprayers', null, null]], 
    ['Logistics of Dispersants', null, null, 
      ['Stockpiles', null, null], 
      ['Means of application', null, null]]], 
  ['PART 5 - SHORELINE CLEAN-UP', null, null, 
    ['Shoreline Types', null, null, 
      ['Bedrock, boulder, cobble and pebble', null, null], 
      ['Gravel and Sand', null, null], 
      ['Man-made', null, null], 
      ['Marshes and lagoons', null, null]], 
    ['General Cleaning Methods', null, null, 
      ['Deluge and flushing', null, null], 
      ['Pressure washing (water, steam)', null, null], 
      ['Sorbents', null, null], 
      ['Vacuum pumps and trucks', null, null], 
      ['Manual labour', null, null], 
      ['Heavy equipment applications', null, null]], 
    ['Shoreline Cleanup Assessment Technique (SCAT)', null, null], 
    ['Disposal', null, null, 
      ['Collection and consolidation ', null, null], 
      ['Bags, barrels and bins', null, null], 
      ['Trucking', null, null], 
      ['Recovery and recycling', null, null], 
      ['In situ burning', null, null], 
      ['Incineration', null, null], 
      ['Bioremediation', null, null], 
      ['Shoreline Cleaning Chemicals', null, null]]], 
  ['PART 6 - APPROACH TO WILDLIFE', null, null, 
    ['General Approach', null, null, 
      ['Recognition of distressed wildlife', null, null], 
      ['Do\'s and don\'ts (safety & hazards)', null, null], 
      ['Reporting of distressed wildlife', null, null], 
      ['Wildlife protection', null, null]], 
    ['Methods', null, null, 
      ['Hazing and relocation', null, null], 
      ['Recovery', null, null], 
      ['Triage', null, null], 
      ['Collection and cleaning', null, null], 
      ['Rehabilitation', null, null]], 
    ['Wildlife Rescue Centers', null, null, 
      ['Organizations and contacts (Canada)', null, null], 
      ['Organizations and contacts (USA)', null, null], 
      ['Organizations and contacts (International)', null, null]]], 
  ['PART 7 - COMMUNCATIONS AND COMPUTERS', null, null, 
    ['Communications', null, null, 
      ['Telephones (fixed, portable, cellular)', null, null], 
      ['Radio', null, null], 
      ['Facsimile (fax)', null, null], 
      ['Person to person', null, null], 
      ['E-mail', null, null]], 
    ['Satellite Technology', null, null, 
      ['GPS (Global Positioning System)', null, null], 
      ['Sensors and images', null, null], 
      ['Surveillance and monitoring', null, null]], 
    ['Computers', null, null, 
      ['Internet applications', null, null], 
      ['Modeling and forecasting', null, null], 
      ['GIS (Geographic Information System)', null, null], 
      ['Record keeping and documentation', null, null]]], 
  ['PART 8 - SURVEILLANCE AND MONITORING', null, null, 
    ['Oil Spill', null, null, 
      ['Reports from scene', null, null], 
      ['Aircraft over-flights', null, null], 
      ['Satellite images', null, null], 
      ['Geographic Information Systems, or GIS updating', null, null], 
      ['Model forecast updating', null, null], 
      ['Status (phase) of oil spill', null, null]], 
    ['Personnel and Equipment Tracking', null, null, 
      ['Personnel in field and in use', null, null], 
      ['Personnel disabled', null, null], 
      ['Equipment in use and staged', null, null], 
      ['Interim cleaning, maintenance and repair', null, null]], 
    ['Assessment and Damages', null, null, 
      ['Environmental damages', null, null], 
      ['Commercial and business impacts', null, null], 
      ['Private property damage', null, null], 
      ['Fate of oil (present and forecast)', null, null], 
      ['Effects sampling', null, null]]], 
  ['PART 9 - RESPONSE TECHNIQUES ', null, null, 
    ['Offshore', null, null, 
      ['Sweep systems ', null, null], 
      ['U-sweep', null, null], 
      ['Three-vessel funnel sweep', null, null], 
      ['Dispersion', null, null], 
      ['Incineration and burning', null, null], 
      ['Collection at sea (vessels, sea bags)', null, null]], 
    ['Near Shore', null, null, 
      ['Side sweep', null, null], 
      ['Encirclement', null, null], 
      ['Deflection', null, null], 
      ['Protection', null, null], 
      ['Collection and disposal', null, null], 
      ['Chemical treatment', null, null], 
      ['Incineration and burning', null, null]], 
    ['Onshore', null, null, 
      ['Shoreline protection', null, null], 
      ['Flushing  ', null, null], 
      ['Collection and consolidation  ', null, null], 
      ['Removal  ', null, null], 
      ['Incineration and burning', null, null], 
      ['Bioremediation', null, null], 
      ['Heavy equipment  ', null, null], 
      ['Manual labour  ', null, null]]], 
  ['PART 10 - SAFETY AT OIL SPILLS ', null, null, 
    ['Properties of oil that affect health', null, null], 
    ['Open water hazards', null, null], 
    ['Near shore hazards', null, null], 
    ['Safety on the shoreline', null, null, 
      ['Safety Overview', null, null], 
      ['Personal protective equipment', null, null], 
      ['Working environment', null, null], 
      ['Equipment and transportation', null, null]], 
    ['Wildlife', null, null]], 
  ['PART 11 - RESPONSE STRATEGIES', null, null, 
    ['Planning', null, null, 
      ['Oil spill contingency plan', null, null, 
        ['Overview', null, null], 
        ['Strategy', null, null], 
        ['Operation', null, null]], 
      ['Corporate structure', null, null], 
      ['Institutional structure', null, null], 
      ['Scenarios and response tactics', null, null], 
      ['Training', null, null]], 
    ['Outside Assistance', null, null, 
      ['Provincial government', null, null], 
      ['Federal government', null, null], 
      ['Specialists', null, null], 
      ['Consultants', null, null], 
      ['Contractors', null, null], 
      ['Local community', null, null]]], 
  ['PART 12 - OIL SPILL MANAGEMENT', null, null, 
    ['Top-down Approach', null, null, 
      ['Corporate commitment', null, null], 
      ['Fiscal commitment', null, null], 
      ['Corporate support', null, null]], 
    ['Incident Command System', null, null], 
    ['Organizational Structure', null, null], 
    ['Phases of Response', null, null, 
      ['Activation Phase', null, null], 
      ['Reactive Phase', null, null], 
      ['Tactical Phase', null, null], 
      ['Strategic Phase', null, null]], 
    ['Documenting the Situation', null, null]]
];