<script type="text/javascript">
var input = "";
var ykid = "";
var result = "http://v.youku.com/player/getRealM3U8/vid/";
input = window.prompt("请输入优酷网页地址", "http://v.youku.com/v_show/id_XXXXXXXXXXXXX.html");
ykid = input.slice(-18,-5);
result += ykid;
result += "/type/video.m3u8";
window.prompt("HTML5播放链接", result);
</script>