var dist = [
['Sydney',[]],	
['Canberra',[295]],		
['Melbourne',[875,655]],					   
['Adelaide',[1420,1215,735]],	
['Port Augusta',[1720,1515,1035,300]],		   
['Iron Knob',[1788,1583,1103,368,68]],		   
['Kimba',[1878,1673,1193,458,158,90]],		  
['Wudinna',[1983,1778,1298,563,263,195,105]],													
['Minnipa',[2017,1812,1332,597,297,229,139,34]],															  
['Poochera',[2051,1846,1366,631,331,263,173,68,34]],														 
['Streaky Bay',[2117,1912,1432,697,397,329,239,134,100,66]],
['Smoky Bay',[2177,1972,1492,757,457,389,299,194,160,126,60]],
['Ceduna',[2217,2012,1532,797,497,429,339,234,200,166,100,40]],
['Penong',[2294,2089,1609,874,574,506,416,311,277,243,177,117,77]],
['Nundroo',[2370,2165,1685,950,650,582,492,387,352,319,253,193,153,76]],	
['Yalata',[2422,2217,1737,1002,702,634,544,439,405,371,305,245,205,128,52]],	
['Nullarbor Roadhouse',[2516,2311,1831,1096,796,728,638,533,499,465,399,339,299,222,146,94]],
['Border Village',[2702,2497,2017,1282,982,914,824,719,685,651,585,525,485,408,332,280,186]],	
['Eucla',[2714,2509,2029,1294,994,926,836,731,697,663,597,537,497,420,344,292,198,12]],	
['Mundrabilla',[2780,2575,2095,1360,1060,992,902,797,763,729,663,603,563,486,410,358,264,78,66]],	
['Madura',[2895,2690,2210,1475,1175,1107,1017,912,878,844,778,718,678,601,525,473,379,193,181,115]],	
['Cocklebiddy',[2978,2773,2293,1558,1258,1190,1100,995,961,927,861,801,761,684,608,556,462,276,264,198,83]],	
['Caiguna',[3042,2837,2357,1622,1322,1254,1164,1059,1025,991,925,865,825,748,672,620,526,340,328,262,147,64]],	
['Balladonia',[3224,3019,2539,1804,1504,1436,1346,1241,1207,1173,1107,1047,1007,930,854,802,708,522,510,444,329,246, 182]],
['Norseman',[3415,3210,2730,1995,1695,1627,1537,1432,1398,1364,1298,1238,1198,1121,1045,993,899,713,701,635,520,437,373,191]],
['Kambalda',[3550,3345,2865,2130,1830,1762,1672,1567,1533,1499,1433,1373,1333,1256,1180,1128,1034,848,836,770,655,572,508,326,135]],
['Kalgoorlie',[3618,3413,2933,2198,1898,1830,1740,1635,1601,1567,1501,1441,1401,1324,1248,1196,1102,916,904,838,723,640,576,394,203,68]],
['Coolgardie',[3658,3453,2973,2238,1938,1870,1780,1675,1641,1607,1541,1481,1441,1364,1288,1236,1142,956,944,878,763, 680,616,434,243,108,40]],
['Southern Cross',[3846,3641,3161,2426,2126,2058,1968,1863,1829,1795,1729,1669,1629,1552,1476,1424,1330,1144,1132,1066,951,868,804,622,431,296,228,188]],
['Merredin',[3954,3750,3270,2535,2235,2167,2077,1972,1938,1904,1838,1778,1738,1661,1585,1533,1439,1253,1241,1175,1060,977,913,731,540,405,337,297,109]],	
['Northam',[4118,3913,3433,2698,2398,2330,2240,2135,2101,2067,2001,1941,1901,1824,1748,1696,1602,1416,1404,1338,1223,1140,1076,894,703,568,500,460,272,163]],	
['Perth',[4214,4009,3529,2794,2494,2426,2336,2232,2197,2163,2097,2037,1996,1920,1844,1792,1698,1512,1500,1433,1319,1235,1172,990,799,664,595,555,368,259,96]]
];

function setOptions(id) {
var selbox = document.getElementById(id);
selbox.options.length = 0;
var ct = [];
for (var i = dist.length - 1;  i >= 0;  i--) {
  ct[i] = dist[i][0]+','+i;
  }
  for (var i = 0; i < dist.length; i++) {
    var c = ct[i].split(',');
    selbox.options[selbox.options.length] = new Option(c[0],c[1]);
  }
}

function calc() {
var v1 = document.getElementById('sOriginCity').value;
var v2 = document.getElementById('sDestCity').value;
var km = 0;
if (v1 != v2)
  km = dist[Math.max(v1,v2)][1][Math.min(v1,v2)];
document.getElementById('k').value = km;
document.getElementById('m').value = Math.round(km/1.60934);
}

function start() {
setOptions('sOriginCity');
setOptions('sDestCity');
document.getElementById('k').value = 0;
document.getElementById('m').value = 0;
}

window.onload=start;