Fluid userscript for Harvest CO-OP Timer app. Pops a Growl notification every so often to remind me to track my hours if no timer is currently running.

harvest-growler.user.js

// ==UserScript==
// @name        CO-OP Timer Growl Reminder
// @namespace   http://coopapp.com
// @description Displays Growl notifications at a user defined interval, reminding you to track your time.
// @include     *
// @author      Andreas Schempp
// @author      Mike Green
// @version	0.1.1
// ==/UserScript==

(function () {
  if (window.fluid) {
    var growlInterval = 45000; // (in milliseconds)
    window.growlReminder = window.setInterval(growlAtUser, growlInterval);
    coop.current_user_class = 'user_' + document.getElementById('controls').firstDescendant().href.match(/\d+/);

    // TODO: Create a form to set the notification interval

    // Create a link to start/stop the notifications
    var pauseLink = document.createElement('a');
    pauseLink.href = "#";
    pauseLink.innerHTML = "Stop Growl Reminders";
    pauseLink.onclick = function(e) {
      if (window.growlReminder) {
        window.clearInterval(window.growlReminder);
        window.growlReminder = null;
        e.target.innerHTML = "Start Growl Reminders";
      } else {
        window.growlReminder = window.setInterval(growlAtUser, growlInterval);
        e.target.innerHTML = "Stop Growl Reminders";
      }
      return false;
    };
    document.getElementById('controls').insertBefore(pauseLink, document.getElementById('controls').firstChild);
  }
})();

function timerStopped() {
  try {
    return ($$('div.entry.current_timer.' + coop.current_user_class).length == 0);
  } catch(e) {
    return true;
  }
}

function growlAtUser() {
  if (timerStopped()) {
    window.fluid.showGrowlNotification({
      title: "Track your time!"
      , description: "Harvest wants to know what you're working on."
      , priority: 1
    });
  }	
}