) {
							dt.column( -2 ).visible( ! dt.column( -2 ).visible() );
						}
					},
					{
						text: 'Toggle salary',
						action: function ( e, dt, node, config ) {
							dt.column( -1 ).visible( ! dt.column( -1 ).visible() );
						}
					}
				]
			}
		]
	} );
} );



	</script>
</head>

<body class="dt-example">
	<div class="container">
		<section>
			<h1>Buttons example <span>Collections</span></h1>

			<div class="info">
				<p>Buttons has only a single built in button type: <a href="//datatables.n