Buttons Especificos

<div class="row-fluid">
        <div class="span2">
            <div class="control-group">
                <label class="control-label required">Código*</label>
                <input type="number" class="span" name="carro[codigo]" id="codigo" min="0" required></input>
            </div>
        </div>
        <div class="span2">
            <div class="control-group">
                <label class="control-label required">Peso*</label>
                <input type="number" class="span" name="carro[peso]" id="peso" min="0" value="0" required></input>
            </div>
        </div>
        <div class="span2">
            <div class="control-group">
                <label class="control-label required">Peso Teórico</label>
                <input type="text" class="span" name="carro[pesoTeorico]" id="pesoTeorico" value="0" readonly="readonly" ></input>
            </div>
        </div>
        <div class="span3">
            <div class="control-group">
                <label class="control-label required">Cantidad Cargos*</label>
                <input type="number" class="span7" name="carro[cantidadCargos]" id="cantidadCargos" min="0" required></input>
            </div>
        </div>
        <div class="span2">
            <input type="hidden" class="span" name="carro[carroID]" value="<?php echo $carroID;?>" readonly="readonly"></input>
        </div>
    </div>