<!-- Write your Script Function-->
<script type="text/javascript">
var count = 0;
function changeColor()
{
setInterval(starttimer, 200);
}
function starttimer()
{
count += 1;
var san = document.getElementById("divtxt");
san.style.color = san.style.color == "red" ? "blue" : "red";
document.getElementById("lbltxt").innerHTML = " Starts Your Time: " +count;
}
</script>
<body>
<div id="divtxt">
<label id="lbltxt"style="font:bold 25px Arial" />
</div>
<button onclick="changeColor();"> Timer Counter Start</button>
</body>
