iframe高度随时调整

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head><title>
    峨眉山--文章预览
</title>
    <script type="text/javascript">
        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>
</head>
<body>
    <iframe id='iframeTag' onload='Javascript:SetWinHeight(this)' width='100%' height='1000' frameborder='0' scrolling='no' src='Article.aspx?SysNo=64&CategorySysNo=36&type=1'></iframe>
</body>
</html>