Correct the time using a parameter from the URL from which the last script was loaded.
function correctTimestampFromSrc(parameterName) {
        parameterName = parameterName || "oauth_timestamp";
        var scripts = document.getElementsByTagName('script');
        if (scripts == null || !scripts.length) return;
        var src = scripts[scripts.length-1].src;
        if (!src) return;
        var q = src.indexOf("?");
        if (q < 0) return;
        parameters = OAuth.getParameterMap(OAuth.decodeForm(src.substring(q+1)));
        var t = parameters[parameterName];
        if (t == null) return;
        OAuth.correctTimestamp(t);
    }