Pasted form Komodo IDE

main.js

var tabs = require("tabs");

tabs.on("ready", function(tab) {
    console.log(tab.title);
    tab.attach({
      contentScript: 'document.defaultView.postMessage("this is my message...", "*"); '
    });
  }
);

var url = require("self").data.url("index.html");
//console.log(url);
tabs.open(url);