69328 fix removeAttribute to remove event listeners. sr:jst, r:saari 68568 add simulated click to keypress activation of links for 4x compat and access. sr:jst, r:saari 77251 fix rest of createEvent strings to use plural form. sr:hyatt, r:jst 77595 fix imagemap tabbing by setting correct tabIndex for no tabindex images. sr:jst, r:saari git-svn-id: svn://10.0.0.236/trunk@93893 18797224-902f-48f8-a5cc-f745e15eee43