Google Search TAB

google.js

ready(function() {

	if ( location.pathname == '/search' ) {
		var s = document.getElementById('gbqfq');
		if ( s ) {
			s.focus();
			s.addEventListener('keydown', function(e) {
				if ( e.keyCode == 9 ) {
					e.preventDefault();

					var rso = document.getElementById('rso'),
						firstA = rso ? rso.querySelector('a') : null;
					firstA.focus();
				}
			});
		}
		
		[].forEach.call(document.querySelectorAll('#rso li.g'), function(li) {
			li.addEventListener('keydown', function(e) {
				if ( e.target.webkitMatchesSelector('h3 a') && ( e.keyCode == 37 || e.keyCode == 39 ) ) {
					e.preventDefault();
					
					var sel = e.keyCode == 37 ? 'previous' : 'next',
						focusLI = li[sel + 'ElementSibling'],
						focus = focusLI ? focusLI.querySelector('h3 a') : null;
					if ( sel == 'previous' && !focus ) {
						focus = s;
					}
					focus && focus.focus();
				}
			}, true);
		});
	}

});