哪位高人能帮助解决一下这个问题，这样的网页有。
今年的继续教育——低碳经济，就是这样的网页，如果当前正在观看，突然有别的窗口弹出，视频会立即暂停播放，只有重获焦点后参会继续播放。不过有的弹出窗口例外，比如 金山毒霸的优盘扫描提示等，就不会让当前网页失去焦点......
源文件代码如下：
<html>
<head>
<style>
body{ margin:0px; padding:0px;}
</style>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type='text/javascript' src='../resource/mtmcode.js'></script>
<link href="/chinahrt/resource/style/common/ymPrompt.css" rel="stylesheet" type="text/css">
<script type="text/javascript" src="/chinahrt/resource/js/ymPrompt.js"></script>
<title>低碳经济</title>
<script type="text/javascript">
function init()
{
API = this.document.APIAdapter;
}
</script>
<script language="JavaScript" type="text/javascript">
function pauseDialog(){
if(this.document.hasFocus()){
window.showModelessDialog("/chinahrt/hrt/course/scorm/course_player/showMessage.html","提示信息","dialogWidth:469px;dialogHeight:194px;scroll:no;status:no");
//ymPrompt.alert({title:'温馨提示',message:'您的学习已持续2分钟，要继续学习吗？'});
//ymPrompt.win({message:'/chinahrt/hrt/course/scorm/course_player/showMessage.html',width:500,height:300,title:'温馨提示',iframe:true});
}
}
function ff(){
alert();
}
</script>
</head>
<body>
<span id="tt"></span>
<iframe id="playFram" name="playFram" src=":80/chinahrt/hrt/course/scorm/course_player/api.jsp?url=/chinahrt/data/course/12c3da7a120658bf7fc1c8e492692800/2011-10-25/C1319519464572/sco0100.htm&userId=133fe8915a61689ffcdadaf429896df9&courseNumber=C1319519464572&scoId=0100&sessionId=1329529413327" height="100%" width="100%" scrolling="no" marginheight="0" frameborder="0" >
</iframe>
<!--
<script>window.setInterval(pauseDialog,1000*60);</script>
-->
<!--
<script>window.setInterval(pauseDialog,1000*60*30);</script>
-->
</body>
</html>
