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- /**
- * Makes "skip to content" link work correctly in IE9, Chrome, and Opera
- * for better accessibility.
- *
- * @link http://www.nczonline.net/blog/2013/01/15/fixing-skip-to-content-links/
- */
- ( 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 );
- }
- } )();
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