Showing and hiding table columns with jQuery - Demo

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Firstname	Lastname	Telephone number
Gilbert	Grape	32165468
Gilbert	Grape	32165468
Gilbert	Grape	32165468
Gilbert	Grape	32165468
Gilbert	Grape	32165468
Gilbert	Grape	32165468
Gilbert	Grape	32165468
Gilbert	Grape	32165468
Gilbert	Grape	32165468
Gilbert	Grape	32165468
Gilbert	Grape	32165468
Gilbert	Grape	32165468
Gilbert	Grape	32165468
Gilbert	Grape	32165468
Gilbert	Grape	32165468
Gilbert	Grape	32165468
Gilbert	Grape	32165468
Gilbert	Grape	32165468
Gilbert	Grape	32165468
Gilbert	Grape	32165468