JQuery自适应IFrame高度，支持嵌套--兼容IE,ff,safafi,chrome

转自：天芒

1  function adjustIFramesHeightOnLoad(iframe) {
2      var iframeHeight = Math.min(iframe.contentWindow.window.document.documentElement.scrollHeight, iframe.contentWindow.window.document.body.scrollHeight);
3       $(iframe).height(iframeHeight);
4 }