iframe自适应高度问题

正在踌躇的时候发现下面的这段代码，终于得意解决。苦于对js没有足够的熟悉，代码中的具体方法参数还得继续学习，感谢提供代码的朋友。

function SetCwinHeight()

{

var cwin=document.getElementById("cwin");

if (document.getElementById)

{

if (cwin && !window.opera)

{

if (cwin.contentDocument && cwin.contentDocument.body.offsetHeight)

cwin.height = cwin.contentDocument.body.offsetHeight;

else if(cwin.Document && cwin.Document.body.scrollHeight)

cwin.height = cwin.Document.body.scrollHeight;

}

}

}

<iframe width="778" align="center" height="200" id="cwin" name="cwin" onload="Javascript:SetCwinHeight(this)" frameborder="0" scrolling="no"></iframe>

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;

else if(cwin.Document && cwin.Document.body.scrollHeight)

cwin.height = cwin.Document.body.scrollHeight;

}

}

}

引用时

onload="javascript:SetCwinHeight(this)"