//焦点图切换
$(function () {
    var timeout;
    var $focusphoto = $('.ct21-focus-photo');
    var $focuslist = $('.ct21-focus-list');
    var focuslaunch = function ($current) {
        var $current;
        if (!$current) {
            $current = $focuslist.find('li.hover').next();
        } else {
            $current = $current;
        };
        if (1 !== $current.length) {
            $current = $focuslist.find('li:eq(0)');
        };
        var $a = $current.find('a');
        var $img = $current.find('img');
        
        $current.addClass('hover').siblings('.hover').removeClass('hover');
        $focusphoto.find('a').attr('title', $a.attr('title')).attr('href', $a.attr('href'));
        $focusphoto.find('img').attr('src', $img.attr('bigsrc')).attr('alt', $img.attr('alt'));
        $focusphoto.find('span').text($a.attr('title'));
        
        timeout = setTimeout(function () {
            focuslaunch();
        }, 3000);
    };
    $focuslist.find('li').click(function () {
        clearTimeout(timeout);
        focuslaunch($(this));
        return false;
    }).eq(0).click();
});