var dyn_carsOptionTree = [['3',[['159','1120']]],['7',[['A3','42'],['A4','43'],['A8','47'],['Q7','1106']]],['10',[['1 Series','882'],['3 Series','86'],['5 Series','87'],['6 Series','88'],['X5','98'],['Z4','101']]],['15',[['Pt Cruiser','129']]],['16',[['DS3','2223'],['Grand C4 Picasso','2204']]],['23',[['Caliber','1121']]],['25',[['Bravo','221']]],['26',[['Focus','253'],['Galaxy','255'],['Mondeo','259']]],['32',[['Civic','282'],['Jazz','289']]],['34',[['i30','1286'],['ix20','2168'],['Santa Fe','309'],['Tucson','983']]],['43',[['Defender','360'],['Discovery','361'],['Range Rover Sport','1290']]],['44',[['RX','370']]],['53',[['CLK Class','447'],['CLS Class','2174'],['E Class','448'],['SLK Class','455']]],['57',[['Countryman','2188']]],['61',[['Note','1091'],['Qashqai','1145']]],['63',[['Astra','868'],['Insignia','1405']]],['67',[['206','550'],['308','1241'],['508','2182']]],['76',[['9-3','661']]],['80',[['Octavia','682'],['Roomster','1248']]],['83',[['Outback','986']]],['85',[['Grand Vitara','707']]],['88',[['Auris','1154'],['Avensis','726'],['Corolla','730']]],['93',[['Golf','812'],['Golf Plus','1386'],['Passat','817'],['Passat CC','2349'],['Touareg','823']]],['94',[['C30','1166'],['V60','2184']]]]
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

}