bullgare

(function ($)
{
    var classSelected = 'jstree-glow',
        $allEls = $('.jstree-search'),
        $prevBtn = $("#prev"),
        $nextBtn = $("#next");
    
    function moveDown()
    {
        var $el = $('.' + classSelected),
            pos = $allEls.index($el);
        
        if (pos < $allEls.length - 1) {
            move($el, $allEls.eq(pos + 1), pos + 1);
        }
    }
    
    function moveUp()
    {
        var $el = $('.' + classSelected),
            pos = $allEls.index($el);
        
        if (pos > 0) {
            move($el, $allEls.eq(pos - 1), pos - 1);
        }
    }
    
    function move($from, $to, newPos)
    {
        $from.toggleClass(classSelected, false);
        $to.toggleClass(classSelected, true);
        
        $prevBtn.attr('disabled', newPos == 0);
        $nextBtn.attr('disabled', newPos == $allEls.length - 1);
    }  

    $(document).ready(function () {
        $prevBtn.on('click', function () {moveUp();});
        $nextBtn.on('click', function () {moveDown();});
    });    
}(jQuery));​