rflow: hidden;
    }
    img {
      width: 19px;
      height: 16px;
    }
    .goog-zippy-expanded img {
      background-image: url('../images/minus.png');
    }
    .goog-zippy-collapsed img {
      background-image: url('../images/plus.png');
    }
  </style>
</head>
<body>
  <h1>goog.ui.Zippy</h1>

  <h2 id="header1">Zippy 1</h2>
  <p id="content1">
    Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Cras et nisi id
    lorem tempor semper. Suspendisse ante. Integer ligula urna, venenatis qu