var dyn_carsOptionTree = [['7',[['A2','41'],['A3','42'],['A4','43'],['A6','45'],['A7','2210']]],['10',[['3 Series','86'],['5 Series','87'],['X5','98']]],['16',[['DS4','2368'],['DS5','2222']]],['25',[['500l','2397']]],['26',[['C-Max','1218'],['Fiesta','252'],['Focus','253'],['Mondeo','259'],['S-Max','1189']]],['32',[['Civic','282'],['CR-V','284']]],['34',[['i10','1301'],['i30','1286'],['i40','2191'],['ix35','2138'],['Santa Fe','309']]],['36',[['XF','1390']]],['39',[['Ceed','1126'],['Rio','339'],['Sorento','342'],['Sportage','343']]],['51',[['Mazda5','926']]],['53',[['C Class','444'],['E Class','448']]],['61',[['X-Trail','534']]],['63',[['Astra','868'],['Insignia','1405'],['Mokka','2371'],['Zafira','541'],['Zafira Tourer','2585']]],['67',[['3008','1457'],['508','2182']]],['72',[['Laguna','618'],['Megane','619']]],['80',[['Octavia','682'],['Superb','683']]],['88',[['Avensis','726'],['Rav4','748']]],['93',[['Scirocco','821'],['Tiguan','1299']]],['94',[['S60','847'],['V40','852'],['V60','2184'],['XC60','1456']]]]
function populateTarget(name,triggerObj,targetObj,emptyText) {

  eval ('tree = ' + name + 'OptionTree')

  triggerValue = getValue(triggerObj)

  for (i=0;i<tree.length;i++) {

    if (tree[i][0]==triggerValue) {
      break
    }

  }

  empty(targetObj)

  newOption = new Option()
  newOption.text = emptyText;

  newOption.value = ""
  targetObj.options[targetObj.options.length] = newOption

  if (i<tree.length) {

    options = tree[i][1]
    selectThisOption = 0

    for (i=0;i<options.length;i++) {

      newOption = new Option()
      newOption.text = options[i][0]
      newOption.value = options[i][1]
      targetObj.options[targetObj.options.length] = newOption

    }

    targetObj.options.length = options.length + 1;
  }

}

function empty(select) {

  select.options.length = 0

}

function getValue(formObj) {

  value = null

  if (formObj.options) { // select

    if (formObj.selectedIndex > -1)
      value = formObj.options[formObj.selectedIndex].value

  } else {

    if (formObj.length) { // radio
      for (var b = 0; b < formObj.length; b++)
        if (formObj[b].checked)
          value = formObj[b].value
    }
    else if (formObj.checked) // checkbox
      value = formObj.value

  }

  return value

}