* @return a normalized <CODE>Rectangle</CODE>
     */
    public static Rectangle getNormalizedRectangle(final PdfArray box) {
        float llx = ((PdfNumber)getPdfObjectRelease(box.getPdfObject(0))).floatValue();
        float lly = ((PdfNumber)getPdfObjectRelease(box.getPdfObject(1))).floatValue();
        float urx = ((PdfNumber)getPdfObjectRelease(box.getPdfObject(2))).floatValue();
        float ury = ((PdfNumber)getPdfObjectRelease(box.getPdfObject(3))).floatValue();
        return new Rectangle(Math.min(llx, urx), Math.min(lly, ury),
        Math.max(llx, urx), Math.max(lly, ury));
    }