jquery

<!DOCTYPE html>
<html>
<head>
<!-- Include jQuery. -->
<script src="jquery.js"></script>
<title>jquery Demo </title>
<script>
	$(document).ready(function(){
		//Let's have some fun.
		//var size =1.0;
		$("#hello").click(function(){
			$(this).animate({
				//opacity:1.0
				fontSize: "3em"
				}, 1000, function(){

			//Animation complete.
			});
		});
	});
</script>
</head>
<body>
<p id="hello">hello world</p>
</body>
</html>