Custom add to cart HTML for regular inventory item as if it is set up as matrix item

With WSDK feature, users can use the Simple HTML and URL Parameters for Adding Items to the Cart in their externally hosted web site. Users who like their regular inventory items to show up like matrix items (dropdown form) can do so. This is applicable for web stores who let their buyers build or assemble items based in the parts available.
 
Example:
 
  <form name=form112 action='http://shopping.netsuite.com/app/site/query/additemtocart.nl?c=REPLACE_WITH_COMPANY_ID&n=1&ext=T' method=post><input type='hidden' name='c' value='REPLACE_WITH_COMPANY_ID'><input type='hidden' name='n' value='1'><select name='buyid' id='buyid'><option value='113' SELECTED >XD</option><option value='114' >XD720</option><option value='115' >XD1080</option><option value='119' >Base 1-1/2</option><option value='120' >Base 1-5/8</option></select><input name='add' id='add' size=4 value=1><input type=submit border='0' value='Add to Cart' alt='Add to Cart'></form>
 
Note:
Buyid passes the internal ID for the item which is added to the cart.