application/modules/mod_discount/assets/gift.tpl
<div class="groups_form" >
<label for="giftcert">
<span class="title">{lang('Certificate code', 'mod_discount')}</span>
<span class="frame_form_field">
<button class="btn f_r" onclick="applyGift(this);
return false">{lang('Apply sertificate', 'mod_discount')}</button>
<div class="o_h">
<input type="text" name="giftcert" value="">
</div>
<span class="must">*</span>
</span>
</label>
</div>