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/** * File skip-link-focus-fix.js. * * Helps with accessibility for keyboard only users. * * Learn more: https://git.io/vWdr2 */ ( function() { var isWebkit = navigator.userAgent.toLowerCase().indexOf( 'webkit' ) > -1, isOpera = navigator.userAgent.toLowerCase().indexOf( 'opera' ) > -1, isIe = navigator.userAgent.toLowerCase().indexOf( 'msie' ) > -1; if ( ( isWebkit || isOpera || 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 ); } })();