#mistake {background-image:url(/mistakes/overlay.png);position:absolute;margin:auto;top:0;left:0;z-index:100;width:100%;}
* html #mistake {background-image:none;}
#m_window {position:absolute;background:#fff;border:5px solid #aaa;overflow:auto;width:350px;height:400px;z-index:150;}
#m_frame {border:0;overflow:auto;width:100%;height:378px;}
* html #m_frame {margin-top:7px;}