var TREE_NODES = [
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    ['crewed', 'http://www.sealevel.be/motorjachten_cr.htm', null]], 
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  ['incentives', 'http://www.sealevel.be/incentive.htm', null],
  ['weer', '#', null], 
  ['flightinfo', 'http://www.sealevel.be/flightinfo.htm', null], 
  ['verzekering', 'http://www.sealevel.be/verzekeringen.htm', null], 
  ['downloads', 'http://www.sealevel.be/downloads.htm', null], 
  ['prijsaanvraag', 'http://www.sealevel.be/contact.htm', null], 
  ['links', 'http://www.sealevel.be/links.htm', null],
  
];