log_url = "http://bojkot.cz/data/log.php";
	var useragent = navigator.userAgent;
	var bName = (useragent.indexOf('Opera') > -1) ? 'Opera' : navigator.appName;
	var pos = useragent.indexOf('MSIE');
if (pos > -1) {
	bVer = useragent.substring(pos + 5);
	var pos = bVer.indexOf(';');
	var bVer = bVer.substring(0,pos);}
	var pos = useragent.indexOf('Opera');
if (pos > -1)	{
	bVer = useragent.substring(pos + 6);
	var pos = bVer.indexOf(' ');
	var bVer = bVer.substring(0, pos);}
if (bName == "Netscape") {
	var bVer = useragent.substring(8);
	var pos = bVer.indexOf(' ');
	var bVer = bVer.substring(0, pos);}
if (bName == "Netscape" && parseInt(navigator.appVersion) >= 5) {
	var pos = useragent.lastIndexOf('/');
	var bVer = useragent.substring(pos + 1);}
	var log_brow = bName + " " + bVer;
	var log_plat = navigator.platform;
	var log_ref;
if (top.frames.length != 0) log_ref = top.document.referrer;
else log_ref = document.referrer;
	var log_string = location.href;
log_string += "|" + log_brow;
log_string += "|" + log_plat;
log_string += "|" + window.screen.width + "x" + window.screen.height;
log_string += "|" + log_ref;
cgi = new Image();
cgi.src = log_url + "?log_string=" + escape(log_string);