function iframeAutoFit()
{
    try
    {
        if(window!=parent)
        {
			var a = parent.document.getElementsByTagName("IFRAME");
			for(var i=0; i<a.length; i++) //author:meizz
			{
				if(a[i].contentWindow==window)
				{
					var h = document.body.scrollHeight;
					
					if(document.all) {h += 4;}
					if(window.opera) {h += 1;}
					a[i].style.height = h;
				}
			}
        }
    }
    catch (ex)
    {
        alert("脚本无法跨域操作！");
    }
}

if(document.attachEvent)
{
  window.attachEvent("onload",  iframeAutoFit);
  window.attachEvent("onresize",  iframeAutoFit);
}
else
{
  window.addEventListener('load',  iframeAutoFit,  false);
  window.addEventListener('resize',  iframeAutoFit,  false);
}