var TREE1_NODES = [
	['Phylogeny', null, null,
		 ['Phylogeny Main', 'phylogeny.htm', null],
		 ['Molecular Data', 'molecular_systematics.htm', null],
		 ['Morphological Data', 'morphological_systematics.htm', null],
	],
	['', null, null],
	['Morphology', null, null,
		['Morphology Main', 'morphology.htm', null],
		['Head', 'head.htm', null],
		['Thorax', 'thorax.htm', null],
		['Legs', 'legs.htm', null],
		['Abdomen', 'abdomen.htm', null],
		['Male Terminalia', 'male_terminalia.htm', null],
		['Female Terminalia', 'female_genitalia.htm', null],
	],
	['', null, null],
	['Taxonomy', null, null,
		['Taxonomy Main', 'taxonomy.htm', null],
		['Subfamily Key', 'subfamily_key.htm', null],
		['Hystrichopsyllina', 'hystrichopsylla.htm', null],
		['Hystroceras', 'subgenus_hystroceras.htm', null],
	],
	['', null, null],
	['Collecting Techniques', 'flea_collection.htm', null,
	],
	['', null, null],
	['Mounting Techniques', 'flea_mounting.htm', null,
	],
	['', null, null],	
	['Databases', null, null,
		['Databases Main', 'data_bases.htm', null],
	    ['Hastriter Collection', 'hastriter_collection.htm', null],
	    ['Ceratophyllidae', 'ceratophyllidae1.htm', null],
	    ['Chimaeropsyllidae', 'chimaeropsyllidae1.htm', null],
	    ['Coptopsyllidae', 'coptopsyllidae.htm', null],
	    ['Ctenophthalmidae', 'ctenophthalmidae.htm', null],
	    ['Hystrichopsyllidae', 'Hystrichopsyllidae.htm', null],
	    ['Ischnopsyllidae', 'ischnopsyllidae1.htm', null],
	    ['Leptopsyllidae', 'leptopsyllidae1.htm', null],
	    ['Pulicidae', 'pulicidae1.htm', null],
	    ['Pygiopsyllidae', 'pygiopsyllidae1.htm', null],
	    ['Rhopalopsyllidae', 'rhopalopsyllidae1.htm', null],
	    ['Stephanocircidae', 'stephanocircidae.htm', null],
	    ['Vermipsyllidae', 'vermipsyllidae1.htm', null],
	    ['Xiphiopsyllidae', 'xiphiopsyllidae1.htm', null],
		['BYU Collection', 'byu_collection.htm', null],
 	],
	['', null, null],
	['Molecular Work', null, null,
		['Molecular Work Main', 'molecular_techniques.htm', null],
		['Tissue List', 'tissue_list.htm', null],
		['Extractions', 'extractions.htm', null],
	],
	['', null, null],
	['Ancient Fleas', 'ancient_fleas.htm', null,
	],
	['', null, null],
	['Acknowledgements', 'acknowledgments.htm', null,
	],
];