#mistake {background-image: url(overlay.png);position: absolute;margin: auto;top:0;left: 0;z-index: 1000;width:100%;}* html #mistake {background-image: none;} #m_window {position: absolute;background: #fff;border: 2px solid #aaa;border-radius:6px;overflow: auto;width: 450px;min-height: 500px;max-height: 600px;z-index: 150;}#m_frame {border: 0; overflow: auto;width: 100%;min-height: 480px;max-height: 580px;}* html #m_frame {margin-top: 7px;}