function TrimString(s) {
    if (s == null) return "";
    if (typeof (s) != "string")
        return TrimString(s.toString());

    var l = 0; var r = s.length - 1;
    while (l < s.length && s[l] == ' ')
    { l++; }
    while (r > l && s[r] == ' ')
    { r -= 1; }
    return s.substring(l, r + 1);
}

function GaTrackClick(url) {
    _gaq.push(['_trackPageview', url]);
}
function GaTrackEvent(action, category, label) {
    if (label != null) {
	_gaq.push(['_trackEvent', category, action, label]);
    } else {
	_gaq.push(['_trackEvent', category, action]);
    }
}