html dom w3c dom html HTMLAnchorElement htmlanchorelementimpl htmlelementimpl htmlanchorelement serialversionuid l getaccesskey accesskey accesskey accesskey accesskey.length accesskey accesskey.substring accesskey setaccesskey accesskey accesskey accesskey.length accesskey accesskey.substring accesskey getcharset setcharset charset charset getcoords setcoords coords coords gethref sethref href href gethreflang sethreflang hreflang hreflang name name getrel setrel rel rel getrev setrev rev rev capitalize shape shape gettabindex settabindex tabindex string.valueof tabindex gettarget settarget target target gettype settype type type blur focus htmlanchorelementimpl htmldocumentimpl owner name owner name