function onSelect(ken) {
var city = new Array();
city[1] = '';
city[2] = '';
city[3] = '';
city[4] = '';
city[5] = '';
city[6] = '';
city[7] = '';
city[8] = '';
city[9] = '';
city[10] = '';
city[11] = '';
city[12] = '';
city[13] = '';
city[14] = '';
city[15] = '';
city[16] = '';
city[17] = '';
city[18] = '';
city[19] = '';
city[20] = '';
city[21] = '';
city[22] = '';
city[23] = '';
city[24] = '';
city[25] = '';
city[26] = '';
city[27] = '';
city[28] = '';
city[29] = '';
city[30] = '';
city[31] = '';
city[32] = '';
city[33] = '';
city[34] = '';
city[35] = '';
city[36] = '';
city[37] = '';
city[38] = '';
city[39] = '';
city[40] = '';
city[41] = '';
city[42] = '';
city[43] = '';
city[44] = '';
city[45] = '';
city[46] = '';
city[47] = '';
document.getElementById('city').innerHTML = '';
}