showImage = function(imgName, w, h)
{
	imgHandle = window.open('imgViewer.php?img='+imgName, 'image', 'scrollbars=no, width='+w+', height='+h+', menubar=no');
	imgHandle.window.focus();
}

function openGallery(muzeum, dzial,ile,w,h)
{
      var top  = (screen.availHeight-h)/2;
      var left = (screen.availWidth-w)/2; 
      window.open('open_gallery.php?muzeum=' + muzeum + '&dzial=' + dzial + '&ile=' + ile  , 'galeria' + dzial , 'width= ' + w + ', height= ' + h + ', top=' + top + ', left=' + left ).focus();
}


function prevPhoto(galleryCount, galleryName) {

  var galleryImg = document.getElementById('galleryPhoto');
  var imgSrc     = galleryImg.src;
  var srcTab     = imgSrc.split("/");
  var imgName    = srcTab[srcTab.length-1];
  var imgTab     = imgName.split(".");
  var img        = imgTab[0].substr(1,2);
  img            = parseInt(img);
  if (img>1 ) {
    img = img-1;
    galleryImg.src = "data/galeria/foto/" + galleryName + "/max/g" + img + ".jpg";
  } 
}

function nextPhoto(galleryCount, galleryName) {

  var galleryImg = document.getElementById('galleryPhoto');
  var imgSrc     = galleryImg.src;
  var srcTab     = imgSrc.split("/");
  var imgName    = srcTab[srcTab.length-1];
  var imgTab     = imgName.split(".");
  var img        = imgTab[0].substr(1,2);
  img            = parseInt(img);
  if (img<galleryCount ) {
    img = img+1;
    galleryImg.src = "data/galeria/foto/" + galleryName + "/max/g" + img + ".jpg";
  } 
}