document.forms['cost_calc_form'].elements['years'].disabled = false;
document.forms['cost_calc_form'].elements['makes'].disabled = true;
document.forms['cost_calc_form'].elements['models'].disabled = true;
document.forms['cost_calc_form'].elements['makes'].length = 0;
document.forms['cost_calc_form'].elements['makes'].options[0] = new Option('Make','');
document.forms['cost_calc_form'].elements['makes'].disabled = false;
document.forms['cost_calc_form'].elements['models'].length = 0;
document.forms['cost_calc_form'].elements['models'].options[0] = new Option('Model','');
document.forms['cost_calc_form'].elements['makes'].options[1] = new Option("Acura",'Acura');
document.forms['cost_calc_form'].elements['makes'].options[2] = new Option("Alfa Romeo",'Alfa Romeo');
document.forms['cost_calc_form'].elements['makes'].options[3] = new Option("Aston Martin",'Aston Martin');
document.forms['cost_calc_form'].elements['makes'].options[4] = new Option("Audi",'Audi');
document.forms['cost_calc_form'].elements['makes'].options[5] = new Option("BMW",'BMW');
document.forms['cost_calc_form'].elements['makes'].options[6] = new Option("Bentley",'Bentley');
document.forms['cost_calc_form'].elements['makes'].options[7] = new Option("Bugatti",'Bugatti');
document.forms['cost_calc_form'].elements['makes'].options[8] = new Option("Buick",'Buick');
document.forms['cost_calc_form'].elements['makes'].options[9] = new Option("Cadillac",'Cadillac');
document.forms['cost_calc_form'].elements['makes'].options[10] = new Option("Chevrolet",'Chevrolet');
document.forms['cost_calc_form'].elements['makes'].options[11] = new Option("Chrysler",'Chrysler');
document.forms['cost_calc_form'].elements['makes'].options[12] = new Option("Dodge",'Dodge');
document.forms['cost_calc_form'].elements['makes'].options[13] = new Option("Ferrari",'Ferrari');
document.forms['cost_calc_form'].elements['makes'].options[14] = new Option("Fiat",'Fiat');
document.forms['cost_calc_form'].elements['makes'].options[15] = new Option("Ford",'Ford');
document.forms['cost_calc_form'].elements['makes'].options[16] = new Option("GMC",'GMC');
document.forms['cost_calc_form'].elements['makes'].options[17] = new Option("Genesis",'Genesis');
document.forms['cost_calc_form'].elements['makes'].options[18] = new Option("Honda",'Honda');
document.forms['cost_calc_form'].elements['makes'].options[19] = new Option("Hyundai",'Hyundai');
document.forms['cost_calc_form'].elements['makes'].options[20] = new Option("Infiniti",'Infiniti');
document.forms['cost_calc_form'].elements['makes'].options[21] = new Option("Jaguar",'Jaguar');
document.forms['cost_calc_form'].elements['makes'].options[22] = new Option("Jeep",'Jeep');
document.forms['cost_calc_form'].elements['makes'].options[23] = new Option("Kandi",'Kandi');
document.forms['cost_calc_form'].elements['makes'].options[24] = new Option("Karma",'Karma');
document.forms['cost_calc_form'].elements['makes'].options[25] = new Option("Kia",'Kia');
document.forms['cost_calc_form'].elements['makes'].options[26] = new Option("Lamborghini",'Lamborghini');
document.forms['cost_calc_form'].elements['makes'].options[27] = new Option("Land Rover",'Land Rover');
document.forms['cost_calc_form'].elements['makes'].options[28] = new Option("Lexus",'Lexus');
document.forms['cost_calc_form'].elements['makes'].options[29] = new Option("Lincoln",'Lincoln');
document.forms['cost_calc_form'].elements['makes'].options[30] = new Option("Lotus",'Lotus');
document.forms['cost_calc_form'].elements['makes'].options[31] = new Option("MINI",'MINI');
document.forms['cost_calc_form'].elements['makes'].options[32] = new Option("Maserati",'Maserati');
document.forms['cost_calc_form'].elements['makes'].options[33] = new Option("Mazda",'Mazda');
document.forms['cost_calc_form'].elements['makes'].options[34] = new Option("Mercedes-Benz",'Mercedes-Benz');
document.forms['cost_calc_form'].elements['makes'].options[35] = new Option("Mitsubishi",'Mitsubishi');
document.forms['cost_calc_form'].elements['makes'].options[36] = new Option("Nissan",'Nissan');
document.forms['cost_calc_form'].elements['makes'].options[37] = new Option("Polestar",'Polestar');
document.forms['cost_calc_form'].elements['makes'].options[38] = new Option("Porsche",'Porsche');
document.forms['cost_calc_form'].elements['makes'].options[39] = new Option("Ram",'Ram');
document.forms['cost_calc_form'].elements['makes'].options[40] = new Option("Rolls-Royce",'Rolls-Royce');
document.forms['cost_calc_form'].elements['makes'].options[41] = new Option("Subaru",'Subaru');
document.forms['cost_calc_form'].elements['makes'].options[42] = new Option("Tesla",'Tesla');
document.forms['cost_calc_form'].elements['makes'].options[43] = new Option("Toyota",'Toyota');
document.forms['cost_calc_form'].elements['makes'].options[44] = new Option("Volkswagen",'Volkswagen');
document.forms['cost_calc_form'].elements['makes'].options[45] = new Option("Volvo",'Volvo');