var slide_step = 6;

function show_main_images(n) 
{
    $p = $('#div-main-images');
    $('.ul-pages .current',$p).removeClass('current');
    $('.ul-pages a:eq('+(n-1)+')',$p).addClass('current');
    $('.item',$p).fadeOut(500);
    $('.div-main-image'+n,$p).fadeIn(500);
}

function next_main_image(n) 
{
    show_main_images(n);
    n = (n+1 > $('#div-main-images .ul-pages li').size()) ? 1 : n+1;
    slide = setTimeout("next_main_image("+n+")", slide_step*1000);
}

$('#div-main-images .ul-pages a').click(function() 
{
    if ($(this).hasClass('current')) return;
    n = $('#div-main-images .ul-pages a').index(this)+1;
    clearTimeout(slide);
    show_main_images(n);
});

slide = setTimeout("next_main_image(2)", slide_step*1000);