change cart in product page

<?php
$i =$this->params->get('i');
$min_quantity =$this->params->get('min_quantity');
$max_quantity =$this->params->get('max_quantity');
$html =$this->params->get('html');
?>
<table>
	<tr>
		<td class="cust_qty">
			<input id="hikashop_product_quantity_field_<?php echo $i; ?>" type="text" value="<?php echo JRequest::getInt('quantity',$min_quantity); ?>" class="hikashop_product_quantity_field" name="quantity" onchange="hikashopCheckQuantityChange('hikashop_product_quantity_field_<?php echo $i; ?>',<?php echo $max_quantity; ?>,<?php echo $min_quantity; ?>);" />
		</td>
		<td class="cust_plus">

			<a id="hikashop_product_quantity_field_change_plus_<?php echo $i; ?>" class="hikashop_product_quantity_field_change_plus hikashop_product_quantity_field_change" href="#" onclick="return hikashopQuantityChange('hikashop_product_quantity_field_<?php echo $i; ?>',1,<?php echo $max_quantity; ?>,<?php echo $min_quantity; ?>);">+</a>
		</td>
		<td class="cust_minus">
			<a id="hikashop_product_quantity_field_change_minus_<?php echo $i; ?>" class="hikashop_product_quantity_field_change_minus hikashop_product_quantity_field_change" href="#" onclick="return hikashopQuantityChange('hikashop_product_quantity_field_<?php echo $i; ?>',0,<?php echo $max_quantity; ?>,<?php echo $min_quantity; ?>);">&ndash;</a>
		</td>
	</tr>
	<tr>
		<td colspan="3"  class="cust_button">
			<?php echo $html; ?>
		</td>
	</tr>
</table>