String bbox = "undefined"; String height = "undefined"; String width = "undefined";
    public String createQueryString(Projection p) {        if (queryHeader == null) {            return null;        }        String bbox = "undefined";        String height = "undefined";        String width = "undefined";        StringBuffer buf = new StringBuffer(queryHeader);        buf.append(REQUEST + "=" + MAP + "&");        if (p != null) {            buf.append(PROJTYPE + "=" + p.getName() + "&" +                       SCALE + "=" + p.getScale() + "&" +                       LAT + "=" + p.getCenter().getLatitude() + "&" +                       LON + "=" + p.getCenter().getLongitude() + "&" +                       HEIGHT + "=" + p.getHeight() + "&" +                       WIDTH + "=" + p.getWidth());        } else {            buf.append(PROJTYPE + "=name_undefined&" +                       SCALE + "=scale_undefined&" +                       LAT + "=center_lat_undefined&" +                       LON + "=center_lon_undefined&" +                       HEIGHT + "=height_undefined&" +                       WIDTH + "=width_undefined");        }        if (imageFormat != null) {            buf.append("&" + FORMAT + "=" + imageFormat);        }        if (transparent) {            buf.append("&" + TRANSPARENT + "=true");        }        if (backgroundColor != null) {            buf.append("&" + BGCOLOR + "=" + backgroundColor);        }        String layers = getLayerMarkers();        if (layers != null) {            buf.append("&" + layers);        }        return buf.toString();    }