控制子窗口的高度

 1  if (iframe.get(0).attachEvent) {
 2             iframe.get(0).attachEvent("onload", function () {
 3                 var new_h = iframe.get(0).contentWindow.document.documentElement.offsetHeight + document.getElementsByClassName('nav')[0].offsetHeight;
 4                 iframe.get(0).height = h >= new_h ? (h - 34) : (new_h - 34);;
 5 
 6             });
 7             return;
 8         } else {
 9             iframe.get(0).onload = function () {//将子iframe的高度设置为子页面的高度
10 
11                 var new_h = iframe.get(0).contentDocument.body.offsetHeight + document.getElementsByClassName('nav')[0].offsetHeight;
12 
13                 iframe.get(0).height = h >= new_h ? (h) : (new_h);
14                 //iframe.get(0).height = new_h;
15             }
16         };