rect circle poly default top middle bottom left right ltr rtl left center right justify preserve defer preserve 1 0 yes no auto disc square circle compact compact compact compact compact left center right noshade preserve ltr rtl left all right none declare data ref object ismap nohref get post text password checkbox radio submit reset file hidden image button checked disabled readonly multiple disabled disabled selected disabled disabled readonly top bottom left right button submit reset disabled void above below hsides lhs rhs vsides box border none groups rows cols all left center right left center right justify char top middle bottom baseline top bottom left right row col rowgroup colgroup nowrap nowrap