Need to display "Out of stock" text when product quantity goes to 0

[PrabuSS]

I would like to display "Out of stock" text on the product page when product quantity is zero. I have used following script to product.tpl and its working good for single combination products. But unfortunately its not working in the multiple combination products. Please see attached.

 

{if (isset($groups) AND $quantity == 0) OR (!isset($groups) AND $product->quantity == 0)}<p class="price" style="color: red;">{l s='Out of stock!'}</p>{/if}

 

Please any one