function change(obj,maxg,obj2){
   alert(obj.style.pixelHeight);
    if(obj.style.pixelHeight){
      hide(obj,maxg,obj2);  //收缩菜单项
   nopen='';
   whichcontinue='';
    }else if(nopen){    //收缩已经展开的菜单项
     whichContinue=obj2;
        nopen.click();
   }else{
     show(obj,maxg,obj2);  //展开菜单项
     nopen=obj2;
     whichContinue='';
   }
  }

老师：这段代码中 obj.style.pixelHeight在easyui框架下获取不到高度值

alert 提示：undefined  请老师帮忙看看！