var intervalId, curBnr = 0;

$(document).ready(function () {
    if ($('.gellery00 img').length > 0) {
        $('.gellery00 img:eq(0)').css('display', 'block');
        playBnr();
    }
});

function pauseBnr() { clearInterval(intervalId) }
function playBnr() { intervalId = setInterval('startBnrPlay()', 5000) }

function startBnrPlay() {
    var allButnsLen = $('.gellery00 img').length;
    if (curBnr == (allButnsLen - 1))
        curBnr = 0;
    else
        curBnr++;
    changeBnr();
}

function changeBnr() { $('.gellery00 img').fadeOut().eq(curBnr).fadeIn('slow') }