การเลือกใช้ input ต้องการใช้ input type "hidden" ต้องการใช้ input type "hidden"ดังคำสั่งนี้

<?php
<input type="submit" name="Submit" value="Submit" onClick="JavaScript:clock();">
?>

<?php
<script>
 
startday = new Date();
clockStart = startday.getTime();

function initStopwatch() 
{ 
	var myTime = new Date(); 
	var timeNow = myTime.getTime();  
	var timeDiff = timeNow - clockStart; 
	this.diffSecs = timeDiff/1000; 
	return(this.diffSecs); 
} 

function getSecs() 
{ 
	var mySecs = initStopwatch(); 
	var mySecs1 = ""+mySecs; 
	mySecs1 = parseInt(mySecs1.substring(0,mySecs1.indexOf(".")));
	mySecs2 = mySecs1 + " วินาที"; 
	if ( mySecs1 < 9 )
	{
		mySecs2 = '<font color=green>' + mySecs2 + '</font>';
	}
	else if ( mySecs1 < 14 )
	{
		mySecs2 = '<font color=orange>' + mySecs2 + '</font>';	
	}
	else
	{
		mySecs2 = '<font color=red>' + mySecs2 + '</font>';	
	}
	
	document.getElementById('timespent').innerHTML = mySecs2
	document.getElementById('hiddentimespent').value = mySecs1
	window.setTimeout('getSecs()',1000); 
}

window.onload = setTimeout('getSecs()',1);



</script>
?>