Repalace Quantity Textbox To Dropdown In Product Detail Page In Magento

<?php if(!$_product->isGrouped()): ?>

<label for="qty"><?php echo $this->__('Quantity :') ?></label>

<select class="input-text qty" id="qty" name="qty">

<?php $i = 1 ?>

<?php do { ?>

<option value="<?php echo $i?>">

<?php echo $i?>

<?php $i++ ?>

</option>

<?php } while ($i <= 3) ?>

</select>

<?php endif; ?>