/**
 * File skip-link-focus-fix.js
 *
 * Helps with accessibility for keyboard only users.
 *
 * Learn more: https://git.io/vWdr2
 *
 * @package    Modern
 * @copyright  WebMan Design, Oliver Juhas
 *
 * @since    1.0.0
 * @version  2.3.0
 */





( function() {

	'use strict';





	var
		isIe = /(trident|msie)/i.test( navigator.userAgent );

	if ( isIe && document.getElementById && window.addEventListener ) {
		window.addEventListener( 'hashchange', function() {

			var
				id = location.hash.substring( 1 ),
				element;

			if ( ! ( /^[A-z0-9_-]+$/.test( id ) ) ) {
				return;
			}

			element = document.getElementById( id );

			if ( element ) {
				if ( ! ( /^(?:a|select|input|button|textarea)$/i.test( element.tagName ) ) ) {
					element.tabIndex = -1;
				}

				element.focus();
			}

		}, false );
	}





} )();