Auto-logout inactive users

<script type="text/javascript">

	var logoutUrl = '<?php echo htmlspecialchars_decode( wp_logout_url() ); ?>';

	var timeout;

	document.onload = resetTimeout;

	document.onmousemove = resetTimeout;

	document.onkeypress = resetTimeout;

	function resetTimeout() {

		clearTimeout( timeout );

		timeout = setTimeout( function () {

			window.location.href = logoutUrl;

		}, 600000 ); // 10 minutes

	}

</script>