Assalam-O-Alaykum

i've made a shoping cart which contain

itemno.
itemdescription
quantity
price.

when i add the same itemno then the quantity increase
other wise it add it in as a defferent product.

What i want is to add a size drop down menu.


1. i m having trouble in getting querystring in addtocart
button cuz it is only getting the itemno querystring.
2. How can i made an size array so that it add with the item no which
and if i select same itemno with the different size then it add it as a different itemindex.


thanx in due anticipation