javascript application: Iframe adapts to the height of its loading content

Copy the codeThe code is as follows:

<html>    
    <head>    
       <meta  http-equiv='Content-Type'  content='text/html;  charset=gb2312'>    
<meta  name='author' content='(meizz plum blossom snow)//'>
<title>iframe adaptive loading page height</title>
    </head>    

    <body>  
        <iframe src=""></iframe>  
    </body>  
</html>

:
<html>
<head>
   <meta  http-equiv='Content-Type'  content='text/html;  charset=gb2312'>
<meta  name='author' content='(meizz plum blossom snow)//'>
<title>iframe  The web pages that adapt to its loading (multi-browser compatible)</title>
   <script  language=javascript>
   function iframeAutoFit()
   {
      try
      {
         if(window!=parent)
         {
          var a = ("IFRAME");
            for(var i=0; i<; i++) //author:meizz
            {
               if(a[i].contentWindow==window)
               {
                   var h = ;
                   if() {h += 4;}
                   if() {h += 1;}
                   a[i]. = h;
               }
            }
         }
      }
      catch (ex)
      {
alert("The script cannot be operated across domains!");
      }
   }
   if()  ("onload",  iframeAutoFit);
   else  ('load',  iframeAutoFit,  false);
   </script>
</head>
<body>
   <div  style="width:  200;  height:  400;  background-color:  yellow">
iframe  Adaptively loaded web pages (multi-browser compatible)
   </div>
</body>
</html>