wordpress - WP e-commerce remove button -

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for adding product cart id i've got code:

<form class="product_form" enctype="multipart/form-data" action="<?php bloginfo('url');?>" method="post" name="1" id="product_143"> <input type="hidden" value="add_to_cart" name="wpsc_ajax_action"> <input type="hidden" value="143" name="product_id"> <button>+</button>

is there code remove item id?

i've tried this:

<form action="<?php bloginfo('url');?>" method="post" class="adjustform remove"> <input type="hidden" name="quantity" value="0"> <input type="hidden" name="key" value="0"> <input type="hidden" name="wpsc_update_quantity" value="true"> <input type="submit" value="-"> </form>

but removes first item in cart.


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