<head runat="server">
<title></title>
<script type="text/javascript">
function ButtonHeighlight(documentObj) {
var btnClicked=document.getElementById(documentObj);
var btn1 = document.getElementById('btn1');
var btn2 = document.getElementById('btn2');
btn1.style.backgroundColor = 'White';
btn2.style.backgroundColor = 'White';
btnClicked.style.backgroundColor = 'Blue';
return false;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input id="btn1" type="button" name="name" value="Button 1" onclick="ButtonHeighlight(this.id)" />
<input id="btn2" type="button" name="name" value="Button 2" onclick="ButtonHeighlight(this.id)" />
</div>
</form>
</body>