HTML Code:
<html>
<head>
<script language="JavaScript">
function disp_ip(){
var ip = '<!--#echo var="REMOTE_ADDR"-->';
document.write(ip)
}
</script>
</head>
<body>
<form>
<input type='button' value='Check your Ip' onClick='disp_ip();'>
</form>
</body>
</html>
But you have to use
.shtml extension not
.html or
.htm because it uses server side includes
