// ポップアップ表示クラス
var PopupWindow = Class.create();
PopupWindow.prototype = {
    initialize: function(className) {
        var elements = $$('.' + className + ' li a');
        for (var i = 0, len = elements.length; i < len; i++) {
            Event.observe(elements[i], 'click', this.addPopupEvent.bindAsEventListener(this));
            Event.observe(elements[i], 'keypress', this.addPopupEvent.bindAsEventListener(this));
        }
    },
    addPopupEvent: function(event) {
        var element = Event.element(event);
        var link = element.getAttribute('href');
        window.open(link,'manual','width=548,height=650,scrollbars=1,status=0,resizable=1');
        Event.stop(event);
    }
};

// onload
Event.observe(window, 'load', function () {
    new PopupWindow('manual');
});