Hi sasen,
Try this code
<!DOCTYPE html>
<html>
<head>
<style>
.clicked {color:red;}
</style>
<script type="text/javascript">
$('#clickMe').click(function() {
alert('Test');
$('#clickMe').addClass("clicked");
});
</script>
</head>
<body>
<div id="clickMe"> Click me </div>
</body>
</html>
Hope this helps you a bit.
Regards,
RK