device.print("/>");
device.print("\"/>");
    public void writeContent(final Device device, final SComponent c) throws IOException {        final SSpacer component = (SSpacer) c;        String height = component.getPreferredSize().getHeight();        String width = component.getPreferredSize().getWidth();        device.print("<img src=\"");        device.print(INVISIBLE_ICON.getURL());        device.print("\" heigth=\"");        device.print(height != null ? height : "1");        device.print("\" width=\"");        device.print(width != null ? width : "1");        device.print("/>");    }