gistfile1.txt

var data = require("sdk/self").data;

require("tabs").open({
  url: data.url("page.html"),
  onReady: function(tab) {
    worker = tab.attach({
      contentScriptFile: data.url("script.js")
    });
    initializeWorker(worker);
  }
});

function initializeWorker(worker) {
  worker.port.on("hi-main-js", function() {
    console.log("got message from content script");
    worker.port.emit("hi-content-script")
  });
}