5.8 为窗口加载不同内容

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="refresh" content="20">
    <script>
        window.onload = function () {
            for (var a = 0; a < document.links.length; a++) {
                document.links[a].onclick = function () {
                    window.open(this.href,"name","resizable=no");
                    return false;
                }
            }
        };
    </script>
</head>
<body>
<a href="src/test_on.png">on</a>
<a href="src/test_off.png">off</a>
</body>
</html>