rem: if (responder[callback] && typeof responder[callback] == 'function') { 
add: if (typeof responder[callback] == 'function') { 
context:   dispatch: function(callback, request, transport, json) {    this.each(function(responder) {      if (responder[callback] && typeof responder[callback] == 'function') {        try {          responder[callback].apply(responder, [request, transport, json]);        } catch (e) {}      }    });  }
meta: 4707	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4707/50c3492c4c3c825dbd3401e134a19ed46799c456/prototype.js/clean/www/resources/prototype/prototype.js