count down that does not reset on page refresh

I found this count down timer code here http://jsfiddle.net/QH6X8/ I would lik开发者_如何学Goe to make 3 additions if possible.

1. How can I make it so that the count down does not reset and start all over if the visitor reloads the page.

2. In the code it has var end = new Date('15 Jul 2011'); How can I make it so that it is counting down to a specific hour instead of day(s) like this var end = new Date('15 Jul 2011 1:00 PM PDT');

3. Lastly after the count down is finished I would like it to display some text Your time is up!.

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For the first, use cookies. A full tutorial can be found here.

For the second: var end = new Date('15 Jul 2011 1:00 PM PDT');

Well it already looks like you know how to use setInterval, so, instead of continuing to modify the timer, use document.getElementById('countdown').innerHTML = "Your time is up" So that takes care of 3.