返回按钮使用Extjs 3.4历史与ie8和ie9标准文档模式。

I am having a problem with Ext.History utility (version 3.4.0) working properly in IE8+. It works in Quirks mode, but not with the document mode in IE8 Standards mode (IE8) or IE9 Standards mode (IE9). Quirks mode isn't working for us because it is not rendering our CSS properly.I am having a problem with Ext.History utility