var _gaq = _gaq || [];
  _gaq.push(['_setAccount', 'UA-18909649-5']);
  _gaq.push(['_trackPageview']);

  (function() {
    var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
    ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
  })();

var otevreno	= "";

function okno (sirka, vyska)
{
	if (otevreno != "")
	{
		otevreno.close();
	}
	
	sirka_plochy	= screen.width;
	vyska_plochy	= screen.height;

	zleva			= (sirka_plochy - sirka) / 2;
	shora			= (vyska_plochy - vyska) / 2;

	otevreno = window.open("about:blank", "foto", "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=" + sirka + ",height=" + vyska + ",left=" + zleva + ",top=" + shora + "");
}