[ 'listenOnce' ]( X_EVENT_KILL_INSTANCE, X_Util_NinjaIframe_handleEvent );\r
\r
X_ViewPort[ 'listenOnce' ]( X_EVENT_AFTER_UPDATE, this, X_Util_NinjaIframe_handleEvent );\r
},\r
\r
[ 'listenOnce' ]( X_EVENT_KILL_INSTANCE, X_Util_NinjaIframe_handleEvent );\r
\r
X_ViewPort[ 'listenOnce' ]( X_EVENT_AFTER_UPDATE, this, X_Util_NinjaIframe_handleEvent );\r
},\r
\r