function Warstwa(nr)
{
 Wleft=Math.floor(((screen.width)/2)-250);
 Wtop=Math.floor(((screen.height)/2)-150);
 document.getElementById("w"+nr).style.left = Wleft + "px";
 document.getElementById("w"+nr).style.top = Wtop + "px";
 document.getElementById("w"+nr).style.visibility =
document.getElementById("w"+nr).style.visibility=="hidden" ? "" : "hidden";
}

function okno(img)
{
pozX = Math.floor(((screen.width)/2)-25);
pozY = Math.floor(((screen.height)/2)-25);
fotowindow = window.open('bigFoto.php?name=' + img, 'shop', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,fullscreen=no,channelmode=no,width=100,height=100, left=' + pozX + ', top=' + pozY);
fotowindow.focus();
}

function initPolecamy()
{
    if( document.getElementById( 'polBox' ) )
    {
        preloadImages();
        rotatePB( 0 );
    }
}

function rotatePB( step )
{
    var komorka = document.getElementById( 'polBox' );
    var ilosc = pf.length;
    if( step == '' ) step = 0;

    var html = '';

    if( pl[step] != '' ) html += '<a href="' + pl[step] + '">';
    html += pf[step];
    if( pl[step] != '' ) html += '</a>';

    komorka.innerHTML = html;

    if( step < (ilosc-1) ) nextstep = step + 1;
    else nextstep = 0;
    setTimeout( "rotatePB( " + nextstep + " )", 3500 );
}