Animate function in asp.net 4.0 Use Jquery.

animate.zip

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title></title>
<style type="text/css">
.contentarea
{
width:300px;
height:250px;
font-size:16px;
border:5px solid red;
background:#ccc666;
color:#000000;
}
</style>
<script src="js/jquery-1.4.1.min.js" type="text/javascript"></script>
<script language="javascript" type="text/javascript">
$(document).ready(function () {
var regular = true;
$("#<%=btnsubmit.ClientID %>").click(function (e) {
e.preventDefault();
if (regular == true) {
$(".contentarea").animate({
opacity: 0.5,
width: "500px",
height: "280px",
fontSize: "42px",
borderwidth: "15px"
}, "slow");
}
else {
$(".contentarea").animate({
opacity: 0.5,
width: "300px",
height: "100px",
fontSize: "16px",
borderwidth: "55px"
}, "slow");
}
regular = !regular;
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<fieldset id="field1" runat="server" title="Animated panal">
<asp:Button ID="btnsubmit" runat="server" Text="Animate" />
<br />
<br />
<asp:Panel ID="Panel1" runat="server" CssClass="contentarea">
I am Dipankar Biswas
</asp:Panel>
</fieldset>
</form>
</body>
</html>

Button click