nl_tokens: Work around IE 9 bug where it always returns false when not attached to another DOM node . Check if the bug exists in this browser
pl_tokens: function checkBug ( ) { // Check if it works on newly created node (fails in IE 9) var a = document . createElement ( 'div' ) ; if ( <mask> . call ( a , 'div' ) ) { return false ; } // Check if it works when node is appended to another node (works in IE 9) var b = document . createElement ( 'div' ) ; a . appendChild ( b ) ; return method . call ( b , 'div' ) ; }