Revert "修正在IE6下mask不能点击关闭的问题"

This reverts commit 522605dbc92f0498c2bd47d46c2b64a5be14984c.
Revert "尝试使用createAsync直接集成异步更改的功能"

This reverts commit fe66cc2f24d5955192a69a7714364dfc95705765.