[code=HTML] <%@ Page Language= "C# " AutoEventWireup= "true " CodeFile= "Default.aspx.cs " Inherits= "_Default " %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN " "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd ">
<html xmlns= "http://www.w3.org/1999/xhtml ">
<head runat= "server ">
<title> Untitled Page </title>
<script type= "text/javascript " language= "javascript ">
function onmuse(id)
{
id.style.background-color= "red ";
}
</script>
</head>
<body>
<form id= "form1 " runat= "server ">
<div>
<input id= "enter " value= "enter " type= "button " onclic
