These timers were created for doing sprints on a stationary bike.

Please adjust Timers.html, "The Timers", Display Options -> Update Interval to 1 if you have not already done so.

Seconds can be any whole number; however, they have not been tested with values greater than 400 (6 plus minute intervals). The alarm names were intended to be short descriptive names, for example less then 8 characters. If you have active interval timers, do not hit setAlarm to try and start another interval timer, it does not work at this time. Only one instance of an interval timer per page. These timers were created for doing sprints on a stationary bike.

The timers are accurate to +- 3 seconds as long as you are not running processor intensive tasks that take away from Firefox and this page. If you want these timers to be accurate, don't run anything else that uses a lot of your computers' CPU or other resources at the same time. Examples, programming compiles, multiple downloads, large spreadsheet recalculations, watching HD videos etc. It can take up to 5 seconds between the actual end time of the alarm (when the display goes to zero) and the playing of the alarm. In other words, the actual time between the timers visual cues will be accurate to +- 3 seconds and the actual time between the audio cues will be as accurate; however, the time between the visual cue for one timer and the audio cue for another event can be off by up to 5 seconds +- 3 seconds. Your mileage will vary. If you want more accuray for timing event a) this application would need to re written as a high priority service or daemon and b) it would have to be run on a Real Time Operating System (RTOS).

The display of the number of repetitions is expanded to be the number of events left. The wait time is included as a repetition.

If you close the screen, the timers are no longer active.

If you turn down the sound on your computer, it will be very hard to hear the alarms.

Use the Check Alarm Play button to make sure you can hear the ALARMS!

If your computer goes into hibernation or Standby, you will not hear your timers.

On most windows systems from your Desktop, right click on a empty area. Navigate to Properties - Screen Saver - Power. We set our computers so that the hard disks are always on it never goes into Standby or Hibernation when we use the timers.

You can open a new tab in FireFox or a new window in Internet Exploder to continue working and your timers will remain active.

If you are unable to hear the test alarm.

Our Alarms are wav files.

Make sure your hardware volume control is not down or off

Use Control Panel to check you sound settings for your sound card and your media players

Examples

Go to "Start -> Control Panel

->Sounds and Audio Devices -> make sure mute is off.

Open Firefox and type about:plugins in the Location Bar.   When the display comes back do a search for wav.  

If you do not find it, then you need to set a default wav player.

Example

Go to "Start -> Control Panel

->Quicktime -> Browser (tab) -> Mime Settings" and make sure wav files are selected under the audio category.

Other multimedia playback programs on your computer may interfere with your Player file types settings!