var images=new Array('images/banner2.jpg','images/banner3.jpg');
var nextimage=0;

doSlideshow();

function doSlideshow()
{
    if($('.bannerimage').length!=0)
    {
        $('.bannerimage').fadeOut(500,function(){slideshowFadeIn();$(this).remove()});
    }
    else
    {
        slideshowFadeIn();
    }
}
function slideshowFadeIn()
{
    $('.banner').prepend($('<img class="bannerimage" src="'+images[nextimage++]+'" style="display:none">').fadeIn(500,function(){setTimeout(doSlideshow,8000);}));
    if(nextimage>=images.length)
        nextimage=0;
}