script
<!DOCTYPE html>
<html>
<head>
<style>
.btn_02 {
color:#000000;
}
.btn_02a {
color:#ff0000;
}
</style>
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
<meta charset="utf-8" />
<script type="text/javascript">
function myFunction(btn) {
if (btn == 'btn2') {
document.getElementById("btn_02").className = "btn_02a";
}
else
{
document.getElementById("btn_02").className = "btn_02";
}
}
</script>
</head>
<body>
<input name="btn_01" id="btn_01" type="submit" value="btn1" onclick="myFunction('btn1')">
<input name="btn_02" id="btn_02" type="submit" value="btn2" class="btn_02" onclick="myFunction('btn2')">
<input name="btn_03" id="btn_03" type="submit" value="btn3" onclick="myFunction('btn3')">
</body>
</html>
