Having problem starting an mp3 file from javascript/ajax. Current logic is that ajax calls an php file that has html code inside that executes the mp3 launch, but that doesn't seem to work that well, or at all for that matter.

index
Code:
	xmlhttp9=new XMLHttpRequest();
	xmlhttp9.onreadystatechange=function(){
		if (xmlhttp9.readyState==4 && xmlhttp9.status==200)  { } }
	alert("start");
	xmlhttp9.open("GET","alarm.php",true);
	xmlhttp9.send();
alarm.php (works by itself, plays alarm on open)
PHP Code:
<?php?><object height="0" width="0" data="audio/alarm.mp3"></object><?php?>
any ideas?