javascript实现iframe高度自适应代码实例

<script>
function SetCwinHeight(obj){ 
  var cwin = obj; 
  if(document.getElementById){ 
    if(cwin && !window.opera){ 
      if(cwin.contentDocument && cwin.contentDocument.body.offsetHeight) 
        cwin.height = cwin.contentDocument.body.offsetHeight + 30; 
      else if (cwin.Document && cwin.Document.body.scrollHeight) 
        cwin.height = cwin.Document.body.scrollHeight + 30; 
    } 
  } 
}
</script>

二.iframe代码:

<script>
<iframe id="IframeId_help" scrolling="no" width="670px" style="border: 0px" frameborder="0"></iframe>
</script>