Dropdown

<select class=" input-text custgroup required-entry" name="product[tier_price][<?php echo $i; ?>][cust_group]" id="tier_price_row_<?php echo $i;?>_cust_group">
        <option value=''>Select Customer Group</option>
        <option <?php if($tierPrice['cust_group']=='32000') echo 'selected = "selected"';?> value='32000'>ALL GROUPS</option>
        <?php $customer = Mage::getModel('customer/group')->getCollection();
        foreach($customer as $type) {?>
        <option <?php if($tierPrice['cust_group']== $type['customer_group_id']) {echo 'selected = selected"';}?> value="<?php echo $type->getCustomerGroupId();?>">
<?php echo $type['customer_group_code']; ?></option>
<?php } ?>

</select>