function calc() { var tarif = a[c+d]("tarif"); var result = a[c+d]("result"); var cars = a[c+d]("cars"); var tarifopr = 0; var day = 0; var price = 0; var SALE = 1.0; var urlt; tarifopr = tarif.options[tarif[b]].value; car = cars.options[cars[b]].value; dotel = "