iframe实现自适应高度

代码简单，兼容性还可以

<script>
function SetWinHeight(obj)
{
 var win=obj;
 if (document.getElementById)
 {
  if (win && !window.opera)
  {
   if (win.contentDocument && win.contentDocument.body.offsetHeight)
   win.height = win.contentDocument.body.offsetHeight;
   else if(win.Document && win.Document.body.scrollHeight)
   win.height = win.Document.body.scrollHeight;
  }
 }
}

</script>

最后，加入iframe,不能丢掉onload属性，当然了，id也必须也函数中的win匹配

<iframe  height="200" id="win" name="win" onload="Javascript:SetWinHeight(this)" frameborder="0" scrolling="no" src="1.htm"></iframe>