// items structure
// each item is the array of one or more properties:
// [text, link, settings, subitems ...]
// use the builder to export errors free structure if you experience problems with the syntax

var MENU_ITEMS = [
	
	['Chemistry : Oil', null, null,
		['Crude oil',  './_intro/intro.html', {'tw':'content'},
			['Fossil Fuels', './lo_1-1/index.html', {'tw':'content'}],
			['Where is oil found', './lo_1-2/index.html', {'tw':'content'}],
			['Ionic Bonding', './lo_1-3/index.html', {'tw':'content'}],
			['Covalent Bonding', './lo_1-4/index.html', {'tw':'content'}],
			['Alkanes', './lo_1-5/index.html', {'tw':'content'}],
			['Environment Issues', './lo_1-6/index.html', {'tw':'content'}],
			['Supply Problems', './lo_1-7/index.html', {'tw':'content'}],
		],
		['Refining', null, null],
		['Cracking', null, null],
		['Fuels', null, null],
		['Plastics', null, null],
	]
	
];