Hi Guys,
There is an elegant way to solve your problem and would use existing functionality of the shopify system to achieve the desired results with a minimum of fuss.
We can design and implement such a solution for you within you budget let me know if you still require this functionality.
email Mike@inspiradigital.co.uk
To find out a little more about us please visit http://wiki.shopify.com/Inspira_Digital_Ltd
Cheers
Mike