iframe双层嵌套后，高度自适应_双重iframe嵌套

/**
 * 自适应iframe高度
 * @param iParentFrameName :父框架ID
 * @param iframeName:框架ID
 */  
function SetIframeSize(iParentFrameName,iframeName)
      {
         var iframe = document.getElementById(iframeName);
         try
          {
             var bHeight = iframe.contentWindow.document.body.scrollHeight;
             var dHeight = iframe.contentWindow.document.documentElement.scrollHeight;
               //据说这两个高度可能不一样
              var height = Math.max(bHeight, dHeight);
              iframe.height =    height;
              //更新父框架高度
              SetIframeSize2(iParentFrameName)
           }catch (ex){}
           }

    //iframeName:框架ID
function SetIframeSize2(iframeName)
{
      var iframe = window.parent.parent.document.getElementById(iframeName);
      try
      {
           var bHeight = iframe.contentWindow.document.body.scrollHeight;
           var dHeight = iframe.contentWindow.document.documentElement.scrollHeight;
           var height = Math.max(bHeight, dHeight);
           iframe.height =    height;
           }catch (ex){}

}

使用上面的函数，分别传入两个框架的name，就可以控制框架高度，只出现一个滚动条