Javascript Code to display Time

script language="javascript" type="text/javascript">
function startTime()
{
var AmPm;
var today=new Date();
var h=today.getHours();
var m=today.getMinutes();
var s=today.getSeconds();

// add a zero in front of numbers<10
AmPm=checkAmPm(h);
h=check12hrs(h);
m=checkTime(m);
s=checkTime(s);

document.getElementById('<%=lblTime.ClientID %>').innerHTML=h+":"+m+":"+s +""+AmPm;
t=setTimeout('startTime()',500);
}

function checkTime(i)
{
if (i<10)
{
i="0" + i;
}
return i;
}
// Check for 12 hrs
function check12hrs(hr)
{
if (hr>12)
{
hr=hr - 12;
}
return hr;
}

function checkAmPm(hr)
{
if (hr>12)
{
AmPm="PM"
}
else
{
AmPm="AM";
}
return AmPm;
}
// End Script