<label class="control-label col-md-3">Utiliza Envase:</label>
              <div class="col-md-1">
                <input type="checkbox" id='showAreaBox' class="producto_Utl.Env">
              </div>

$('#showAreaBox').change(function() {

    // if the checkbox is checked, invoke the link
    if(this.checked ) {
      $(window.location.replace("/Productos/<%= @producto.id %>/envase"))

    }

    // checkbox is unchecked
    // else {}
});