function popup(url, w, h)
{
    var x = Math.round(0.8 * screen.width) - w;
    var y = Math.round(0.2 * screen.height);
    window.open(url, '',
        'left=' + x +
        ',top=' + y +
        ',width=' + w +
        ',height=' + h +
        ',scrollbars=no'
    );
}

var _gaq = _gaq || [];
_gaq.push(
    [ "_setAccount", "UA-6602014-1" ],
    [ "_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);
})();