nl_tokens: / * 添加事件
pl_tokens: function ( oTarget , sEventType , fnHandler ) { oTarget . listeners = oTarget . listeners || { } ; var listeners = oTarget . listeners [ sEventType ] = oTarget . listeners [ sEventType ] || [ ] ; listeners . <mask> ( fnHandler ) ; if ( ! listeners [ "_handler" ] ) { listeners [ "_handler" ] = function ( e ) { var e = e || window . event ; for ( var i = 0 , fn ; fn = listeners [ i ++ ] ; ) { fn . call ( oTarget , e ) } } oTarget . addEventListener ? oTarget . addEventListener ( sEventType , listeners [ "_handler" ] , false ) : oTarget . attachEvent ( 'on' + sEventType , listeners [ "_handler" ] ) ; } }