//iframe 高度自适应
function iframeAutoFit(iframeObj) {
setTimeout(function () {
if (!iframeObj) return;
iframeObj.height = (iframeObj.Document ? iframeObj.Document.body.scrollHeight : iframeObj.contentDocument.body.offsetHeight);
}, 200);
}<span style="font-family: Arial, Helvetica, sans-serif;"> </span>

<iframe id="HQRight" name="HQRight" onload="javascript:iframeAutoFit(this);"
height="235px;" width="770px" frameborder="0" scrolling="no"
src="Market/HQData_page.aspx?t=tjs"></iframe>

//动态添加样式
function addSheetFile(obj, path) {
if (obj == undefined || obj == null)
obj = document;

var fileref = obj.createElement("link")
fileref.rel = "stylesheet";
fileref.type = "text/css";
fileref.href = path;
fileref.media = "screen";
var headobj = obj.getElementsByTagName('head')[0];
headobj.appendChild(fileref);
}