nl_tokens: Aborts an active request .
pl_tokens: function ( request ) { var me = this , xhr ; if ( ! request ) { request = me . getLatest ( ) ; } if ( request && me . isLoading ( request ) ) { /*
               * Clear out the onreadystatechange here, this allows us
               * greater control, the browser may/may not fire the function
               * depending on a series of conditions.
               */ xhr = request . xhr ; try { xhr . onreadystatechange = null ; } catch ( e ) { // Setting onreadystatechange to null can cause problems in IE, see // http://www.quirksmode.org/blog/archives/2005/09/xmlhttp_notes_a_1.html xhr . onreadystatechange = Ext . emptyFn ; } xhr . abort ( ) ; me . clearTimeout ( request ) ; if ( ! request . timedout ) { request . aborted = true ; } me . onComplete ( request ) ; me . cleanup ( <mask> ) ; } }