Removing cart items with hyperlink question

Hey all, OK, I've made quite a bit of progress with my shopping cart and I'm at the stage of removing items from it. If I change the quantity to "0" and click the submit button the item is removed. However it isn't obvious how to remove items so I want to put a link next to each item that says "Remove Item". The first line below works but the second one doesn't. If $quantity were to equal 0 then I want both of these to do exactly the same thing. echo "<Input type=text size=2 name=quantity[$buy] value=$quantity>"; echo "<a href=$PHP_SELF?quantity[$buy]=0>Remove Item</a><br>"; Any ideas? Cheers, G :)