We need the script for the timer on penny auctions
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I am making a website and the page is oriented around a countdown system. If the timer ever reaches 0, the whole thing will stop. Below are the specifics:

I need a countdown timer that runs from 30 seconds to 0 seconds. If the timer is at 0 seconds, the script runs php code #1 (which makes the timer stop and if any user refreshes the page, it will still stay at zero).
There is also two buttons. If user clicks on button #1, the timer will get reset to 30 seconds remaining. Then the script will run the php code #2 (which allows the timer to begin counting down again from 30 seconds). If user clicks on button #2, the timer will get reset to 5 seconds remaining and same thing follows as the first button.

I want the timer counter script to between before certain hours (like let’s say, noon-4PM). I want the counter to automatically begin at Noon with the above instructions. Also, if by 4PM, the counter never reaches 0 (meaning it never reaches php code #1), I want the timer counter to stop, disappear, and a message appear over it to link it to a new page.

And obviously the timer should show the same number (seconds remaining) for all the users on the website!