drublic

var tabbableElements = 'a[href], area[href], input:not([disabled]),' +
	'select:not([disabled]), textarea:not([disabled]),' +
	'button:not([disabled]), iframe, object, embed, *[tabindex],' +
	'*[contenteditable]';

var keepFocus = function (context) {
	var allTabbableElements = context.querySelectorAll(tabbableElements);
	var firstTabbableElement = allTabbableElements[0];
	var lastTabbableElement = allTabbableElements[allTabbableElements.length - 1];

Zegnat

Fixing your skip links.

Read Damon Muma on this. He proposes the following jQuery solution (inspired by Thompson, fixed by me):

// Apply focus properly when accessing internal links with keyboard in WebKit browsers.
$("a[href^='#']").not("a[href='#']").click(function() {
   $("#"+$(this).attr("href").slice(1)+"").focus();
});