Create a countdown timer using javascript with alarm sound

[TI3GIB]

I'm trying to create a simple countdown timer that will play an alarm sound at the end (this will be for a recipe site).I found a script for a simple countdown timer, but I am having trouble implementing an alarm sound at the end. I am attempting to use SoundManager2 for the alarm sound. I am new to programming so any tips would help! Thank you!!here is my countdown timer script: \[code\]function countdown( elementName, minutes, seconds ){ var element, endTime, hours, mins, msLeft, time; function twoDigits( n ) { return (n <= 9 ? "0" + n : n); } function updateTimer() { msLeft = endTime - (+new Date); if ( msLeft < 1000 ) { mySound.play(); //element.innerHTML = "countdown's over!"; } else { time = new Date( msLeft ); hours = time.getUTCHours(); mins = time.getUTCMinutes(); element.innerHTML = (hours ? hours + ':' + twoDigits( mins ) : mins) + ':' + twoDigits( time.getUTCSeconds() ); setTimeout( updateTimer, time.getUTCMilliseconds() + 500 ); } } element = document.getElementById( elementName ); endTime = (+new Date) + 1000 * (60*minutes + seconds) + 500; updateTimer();}countdown( "countdown", 0, 15 );\[/code\]