How to get Customer Group Id in Magento

Here is the script to get customer group id in Magento

<?php
$login = Mage::getSingleton( 'customer/session' )->isLoggedIn(); //Check if User is Logged In
if($login)
{
$groupId = Mage::getSingleton('customer/session')->getCustomerGroupId(); //Get Customers Group ID
if($groupId == 2) //My wholesale customer id was 2 So I checked for 2. You can check according to your requirement
{
echo 'You are a wholesale Customer';
}
}
?> 

Hope it helps .. Thanks...