駅探で検索した電車の時間を、Googleカレンダーに予定として登録するブックマークレット

javascript: (function(){
    var addzero = function(n){
        if (n < 10) {
            return "0" + n;
        }
        else {
            return n + "";
        }
    };
    
    var datestr = function(d){
        return d.getUTCFullYear() + addzero(d.getUTCMonth() + 1) + addzero(d.getUTCDate()) + "T" + addzero(d.getUTCHours()) + addzero(d.getUTCMinutes()) + "00Z";
    };
    
    var i;
    
    var norikae_list = document.getElementById("norikae_list");
    var datecontent = norikae_list.getElementsByTagName("h2")[0];
    var text = datecontent.firstChild.nodeValue;
    var ems = datecontent.getElementsByTagName("em");
    var year = ems[0].innerHTML;
    var month = ems[1].innerHTML - 1;
    var day = ems[2].innerHTML;
    
    var maincontent;
    for (i = 1; i < 6; i++) {
        maincontent = document.getElementById("route" + i);
        if (maincontent.getAttribute("style") === "") {
            break;
        }
    }
    var h2 = maincontent.getElementsByTagName("h2")[0];
    var h2text = h2.firstChild.nodeValue;
    var timecontent = h2text.match(/\d\d/g);
    var shour = timecontent[0];
    var smin = timecontent[1];
    var ehour = timecontent[2];
    var emin = timecontent[3];
    
    var table = maincontent.getElementsByTagName("table")[1];
    var times = table.getElementsByClassName("time");
    var stations = table.getElementsByClassName("station_name");
    var trains = table.getElementsByClassName("train");
    var details = "";
    for (i = 0; i < trains.length; i++) {
        details += times[i * 2].textContent;
        details += "  ";
        details += stations[i].innerHTML;
        details += "<br/>";
        details += times[i * 2 + 1].textContent;
        details += "  ";
        details += trains[i].innerHTML;
        details += "<br/>";
    };
    details += times[i * 2].textContent;
    details += stations[i].innerHTML;
    
    var start = new Date(year, month, day, shour, smin, 0);
    var end = new Date(year, month, day, ehour, emin, 0);
    var dates = datestr(start) + "/" + datestr(end);
    
    var url = "https://www.google.com/calendar/event?action=TEMPLATE&text=" +
    encodeURIComponent(text) +
    "&dates=" +
    dates +
    "&details=" +
    encodeURIComponent(details);
    window.open(url, "_blank");
})();

FirefoxとChromeでは動くことを確認しました。