code: public Frame border(boolean threeD, int width, String color)
      {
          border=" frameborder=\""+(threeD?"yes":"no")+"\"";
          if (width>=0)
              border+=" border=\""+width+"\"";
  
          if (color!=null)
              border+=" BORDERCOLOR=\""+color+"\"";
          return this;
      }
docs: /* ------------------------------------------------------------