function WriteVisual()
{
  var v = Math.random(4);
  v = Math.ceil(v * 10);
  if (v!=0) v = v - 1;
  if (v > 4) v = Math.floor(v/2);
  
  if ((v > 4) || (v < 0)) v = 0;

  var path = 'img/visual/v' + v + '.jpg';

  document.write('<img src="' + path + '" width="560" height="315" alt="" />');

}


function openFoto(url, w, h)
{
    window.open(url, 'imageWindow', 'status=0, toolbar=0, width='+w+', height='+h+', menubar=0, resizable=1, location=0, left=300, top=300');
}