包装所见即所得编辑器的iframe

我在一个项目中使用了sceditor，我需要用div包装iframe.但是，当我这样做时，内容将被删除，当然我也不知道为什么.

I'm using sceditor in one my projects, and I need to wrap the iframe with a div. However, when I do that, the content gets erased and of course I don't know why.

有人可以解释为什么会这样吗?

Can someone throw some light on why is this happening?

要对此进行测试，只需进入 http://www.sceditor.com/并使用萤火虫执行此操作在控制台中

To test this, just go http://www.sceditor.com/ and with firebug execute this in the console

$(".sceditor-container iframe").wrap("<div class='some_class'></div>");

我也尝试过更改源代码，但是没有运气.

I've also tried to alter the source code with no luck.