    @Test
    @Alerts({"10em,20em", "160,320", "160px,320px", "50%,25%", "80,80", "80px,80px"})
    public void widthAndHeightPercentagesAndEm() {
        final String html = "<html><body onload='test()'>\n"
                + "<div id='d1' style='width:10em;height:20em'><div id='d2' style='width:50%;height:25%'></div></div>\n"