var TREE_NODES = [
				['Visual C++', null, null,
					['How To...', null, null,
						['Window Layout Setup', 'javascript:changeURL(30)', '_top'],
						['Visual Studio Walkthrough', 'javascript:changeURL(10)', '_top'],
						['Add Panels in Visual Studio', 'javascript:changeURL(0)', '_top'],
						['Visual Studio on Lab PCs', 'javascript:changeURL(112)', '_top'],
						['Saving on the Network', 'javascript:changeURL(106)', '_top'],
						['Saving Issues', 'javascript:changeURL(109)', '_top'],
						['Missing Bracket', 'javascript:changeURL(6)', '_top'],
						['Missing Semicolon', 'javascript:changeURL(7)', '_top'],
						['Debug a program', 'javascript:changeURL(2)', '_top'],
						['Dividing by Zero', 'javascript:changeURL(3)', '_top'],
						['Integers Vs Real Numbers', 'javascript:changeURL(5)', '_top'],
						['Picture Boxes', 'javascript:changeURL(8)', '_top'],
						['Remove Event Handlers', 'javascript:changeURL(9)', '_top'],
					],
					['Chapter 1: An Introduction', null, null,
						['Hello World!', 'javascript:changeURL(4)', '_top'],
					],
					['Chapter 2: Accessing Data', null, null,
						['Simple Addition', 'javascript:changeURL(1)', '_top'],
					],
					['Chapter 3: Converting Data', null, null,
						['Form Load', 'javascript:changeURL(12)', '_top'],
						['Button Event', 'javascript:changeURL(13)', '_top'],
					],
					['Chapter 4: Selection', null, null,
						['Form Load', 'javascript:changeURL(15)', '_top'],
						['Calculate Button', 'javascript:changeURL(14)', '_top'],
					],
					['Chapter 5: Methods', null, null,
						['Design', 'javascript:changeURL(18)', '_top'],
						['Instance Variables', 'javascript:changeURL(17)', '_top'],
						['Form Load', 'javascript:changeURL(19)', '_top'],
						['Button Events', 'javascript:changeURL(16)', '_top'],
						['Timer Event', 'javascript:changeURL(20)', '_top'],
					],
					['Chapter 6: Loops', null, null,
						['Function Plotter', 'javascript:changeURL(21)', '_top'],
						['Quality Control', 'javascript:changeURL(29)', '_top'],
					],
					['Chapter 7: Arrays', null, null,
						['Seating Chart', 'javascript:changeURL(22)', '_top'],
					],
					['Chapter 8: Sorting', null, null,
						['Vertical Bar Chart', 'javascript:changeURL(23)', '_top'],
					],
					['Chapter 9: Binary Search', null, null,
						['Film Inventory Search', 'javascript:changeURL(24)', '_top'],
					],
					['Chapter 10: Recursion', null, null,
						['Programming Code', 'javascript:changeURL(25)', '_top'],
						['Output', 'javascript:changeURL(26)', '_top'],
						['On Your Own', 'javascript:changeURL(27)', '_top'],
					],
					['Chapter 11: Pointers', null, null,
						['Overview', 'javascript:changeURL(28)', '_top'],
					],
				],
				['Visual Basic', null, null,
					['How To...', null, null,
						['Visual Studio Walkthrough', 'javascript:changeURL(124)', '_top'],
						['Window Layout Setup', 'javascript:changeURL(110)', '_top'],
						['Window Layout', 'javascript:changeURL(114)', '_top'],
						['Adding Panels', 'javascript:changeURL(101)', '_top'],
						['Debug a Program', 'javascript:changeURL(102)', '_top'],
						['Visual Studio on Lab PCs', 'javascript:changeURL(112)', '_top'],
						['Saving on the Network', 'javascript:changeURL(106)', '_top'],
						['Saving Issues', 'javascript:changeURL(109)', '_top'],
						['Integer Vs Real numbers', 'javascript:changeURL(105)', '_top'],
						['Recover from a Syntax Error', 'javascript:changeURL(111)', '_top'],
						['Remove Event Handlers', 'javascript:changeURL(108)', '_top'],
					],
					['Projects', null, null,
						['Dividing By Zero', 'javascript:changeURL(103)', '_top'],
						['Use a Picture Box', 'javascript:changeURL(107)', '_top'],
						['Hello World! (ch1)', 'javascript:changeURL(104)', '_top'],
						['Simple Addition (ch2)', 'javascript:changeURL(100)', '_top'],
						['Binary Conversion (ch3)', 'javascript:changeURL(118)', '_top'],
						['Vacation Planner (ch4)', 'javascript:changeURL(119)', '_top'],
						['Quality Control (ch5)', 'javascript:changeURL(117)', '_top'],
						['Function Plotter (ch6)', 'javascript:changeURL(120)', '_top'],
						['Seating Chart (ch7)', 'javascript:changeURL(116)', '_top'],
						['Vertical Bar Chart (ch8)', 'javascript:changeURL(121)', '_top'],
						['Film Inventory Search (ch9)', 'javascript:changeURL(122)', '_top'],
						['Recursive Branches (ch10)', 'javascript:changeURL(123)', '_top'],
					],
				],
				['Other Links', null, null,
						['Dr. Allert\'s Home Page', 'http://www.d.umn.edu/~jallert', '_top'],
						['UMD Home Page', 'http://www.d.umn.edu/', '_top'],
						['Change View Mode', 'javascript:modPercent()', '_top'],
						['About', 'javascript:about()', '_top'],
				]
			];