I think I've worked this out for the most part. My only problem that I can see no is that when the item is not available it's still putting the item in the cart is there a way to prevent that from happening?
http://www.awinninglook.com/products-detail.php?ProductID=1000
Upon thinking about it would a javascript hide show script be better to accomplish this that shows the in stock status whenever you change the menu items or is there a way to make the stock status update without submitting the form. That way you don't have to press the add to cart button unless it's in stock. Not sure how to approach that since I don't really write much javascript. I could be wrong but is that how you show the status in the PowerStore?