Add Time left for the special price in Magento:

<?php
                            if ($_product[special_price] != NULL && $_product[special_to_date] > date('m/d/y h:i:s', time())){
$timestamp = strtotime("$_product[special_to_date]");
    $timestamp =  date('m/d/Y h:i A', $timestamp);
                            echo 'Time left for the special price:<br>';
                                ?>
                                <script language="JavaScript">
TargetDate = "<?php echo $timestamp; ?>";
BackColor = "palegreen";
ForeColor = "navy";
CountActive = true;
CountStepper = -1;
LeadingZero = true;
DisplayFormat = "%%D%% Days, %%H%% Hours, %%M%% Minutes, %%S%% Seconds.";
FinishMessage = "It is finally here!";
</script>
                             
                             
<script language="JavaScript">
                             
function calcage(secs, num1, num2) {
 s = ((Math.floor(secs/num1))%num2).toString();
 if (LeadingZero && s.length < 2)
s = "0" + s;
 return "<b>" + s + "</b>";
}

function CountBack(secs) {
 if (secs < 0) {
document.getElementById("cntdwn").innerHTML = FinishMessage;
return;
 }
 DisplayStr = DisplayFormat.replace(/%%D%%/g, calcage(secs,86400,100000));
 DisplayStr = DisplayStr.replace(/%%H%%/g, calcage(secs,3600,24));
 DisplayStr = DisplayStr.replace(/%%M%%/g, calcage(secs,60,60));
 DisplayStr = DisplayStr.replace(/%%S%%/g, calcage(secs,1,60));

 document.getElementById("cntdwn").innerHTML = DisplayStr;
 if (CountActive)
setTimeout("CountBack(" + (secs+CountStepper) + ")", SetTimeOutPeriod);
}

function putspan(backcolor, forecolor) {
document.write("<span id='cntdwn' style='background-color:" + backcolor +
"; color:" + forecolor + "'></span>");
}

if (typeof(BackColor)=="undefined")
 BackColor = "white";
if (typeof(ForeColor)=="undefined")
 ForeColor= "black";
if (typeof(TargetDate)=="undefined")
 TargetDate = "12/31/2020 5:00 AM";
if (typeof(DisplayFormat)=="undefined")
 DisplayFormat = "%%D%% Days, %%H%% Hours, %%M%% Minutes, %%S%% Seconds.";
if (typeof(CountActive)=="undefined")
 CountActive = true;
if (typeof(FinishMessage)=="undefined")
 FinishMessage = "";
if (typeof(CountStepper)!="number")
 CountStepper = -1;
if (typeof(LeadingZero)=="undefined")
 LeadingZero = true;


CountStepper = Math.ceil(CountStepper);
if (CountStepper == 0)
 CountActive = false;
var SetTimeOutPeriod = (Math.abs(CountStepper)-1)*1000 + 990;
putspan(BackColor, ForeColor);
var dthen = new Date(TargetDate);
var dnow = new Date();
if(CountStepper>0)
 ddiff = new Date(dnow-dthen);
else
 ddiff = new Date(dthen-dnow);
gsecs = Math.floor(ddiff.valueOf()/1000);
CountBack(gsecs);
                                </script>
<?php
                                }
                                //END OF INSERTED CODE
                                ?>