function slideSwitch() {
    var $active = $('#bannerheader .imgbanner.active');
    if ( $active.length == 0 ) $active = $('#bannerheader .imgbanner:last');
    var $next =  $active.next().length ? $active.next(): $('#bannerheader .imgbanner:first');

    $active.addClass('last-active');
    $next.css({
        opacity: 0.0
    })
    .addClass('active')
    .animate({
        opacity: '1.0'
    }, 1000, function() {
        $active.removeClass('active last-active');
        $active.css('opacity','');
    });
}

$(function() {
    $("#bannerheader .imgbanner:first").addClass("active");
    $("#bannerheader .imgbanner").css("opacity",0.0);
    $("#bannerheader .imgbanner.active").css("opacity",1.0);
    if ($('#bannerheader .imgbanner').length > 1) setInterval( "slideSwitch()", 6000 );
});