function changeFoto(obj, i) {
    imgPos = i;
    var img = document.getElementById('int-fotogalerie-main').firstChild;
    var kom = document.getElementById('koment-inner');
    //389px × 282px
    var mw = 389.0;
    var mh = 282.0;
    var mr = mw/mh;
    var w = obj.width;
    var h = obj.height;
    var r = w/h;
    var nw = mw;
    var nh = mh;
    if (mr > r)
        nw = nh * r;
    else
        nh = nw / r;
    
    var top = 0;
    if (nh < mh)
    	top = (mh-nh)/2.0;
    //alert(mw+' '+mh+';'+nw+' '+nh);
    img.src = 'img/nic.gif';
    img.width = nw;
    img.height = nh;
    img.src = obj.src.replace('/storage/tiny/','/storage/medium/');
    img.alt = obj.alt;
    img.title = obj.title;
    img.style.margin = top+'px 0 0 0';
    kom.innerHTML = obj.title != '' ? obj.title : '&nbsp;';
}

function moveFoto(mov,big) {
    if (imgPos+mov < 0) return;
    else if (imgPos+mov >= imgs.length) return;
    big = big || 0;
    
    imgPos += mov;
    var sf = document.getElementById('int-superfoto');
    var w = imgs[imgPos][2];
    var h = w;
    w = w.replace(/.*width="(.*?)".*/, '$1');
    h = h.replace(/.*height="(.*?)".*/, '$1');
  
    if (!big) {
    	var mw = 389.0;
    	var mh = 282.0;
    } else {
    	var mw = 386.0;
    	var mh = 344.0;
    }
    var mr = mw/mh;
    var r = w/h;
    var nw = mw;
    var nh = mh;
    if (mr > r)
        nw = nh * r;
    else
        nh = nw / r;
    
    var top = 0;
    if (nh < mh)
    	top = (mh-nh)/2.0;
   
    
    sf.src = 'img/nic.gif';
    sf.width = nw;
    sf.height = nh;
    sf.src = imgs[imgPos][0];
    sf.alt = sf.title = imgs[imgPos][1];
    sf.style.margin = top+'px 0 0 0';
    document.getElementById('koment-inner').innerHTML = imgs[imgPos][1] != '' ? imgs[imgPos][1] : '&nbsp;';
}