public/javascripts/yui/carousel/carousel-debug.js
function (el) {
            var carousel = this;

            if (el) {
                if (carousel._focusableItemEl) {
                    carousel._focusableItemEl.tabIndex = -1;
                }
                carousel._focusableItemEl = el;
                el.tabIndex = 0;
            }
        }
function (el) {
            var carousel = this;

            if (el) {
                if (carousel._focusableItemEl) {
                    carousel._focusableItemEl.tabIndex = -1;
                }
                carousel._focusableItemEl = el;
                el.tabIndex = 0;
            }
        }
function ( el ) { var carousel = this ; if ( el ) { if ( carousel . _focusableItemEl ) { carousel . _focusableItemEl . tabIndex = - 1 ; } carousel . _focusableItemEl = el ; el . tabIndex = 0 ; } }
Set the correct tab index for the Carousel items.

@method _updateTabIndex
@param el {Object} The element to be focussed
@protected
Set the correct tab index for the Carousel items .