Need fast HELP with out of stock and "please select" option

[cmaaga]

Wrrr.... I have problem:

 

1) I add default value to select group "Please select"

 

<select name="{$groupName}" id="group_{$id_attribute_group|intval}" onchange="javascript:findCombination();{if $colors|@count > 0}$('#wrapResetImages').show('slow');{/if};">
{if $id_attribute_group|intval == 2}
<option value="-1" title="Wybierz rozmiar" selected="selected">{l s='Wybierz rozmiar'}</option>
{/if}

{foreach from=$group.attributes key=id_attribute item=group_attribute}

 

And now, when I want display "Out of stock" message it's always give me it, because any combination and product with "Please select" attribute doesn't exist!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

 

ANYONE?