var dyn_carsOptionTree = [['7',[['A3','42'],['A6','45'],['Q7','1106']]],['10',[['3 Series','86'],['5 Series','87']]],['26',[['Fiesta','252'],['Kuga','1391'],['Mondeo','259']]],['34',[['i20','1412'],['i40','2191'],['Tucson','983']]],['39',[['Ceed','1126'],['e-Niro','2770'],['e-Soul','2769'],['EV6','2799'],['EV9','7247'],['Niro','2595'],['Optima','2225'],['Picanto','1118'],['Rio','339'],['Sportage','343'],['Stonic','2643'],['XCeed','2718']]],['43',[['Range Rover Evoque','2226']]],['44',[['ES 300 H','2695']]],['53',[['C Class','444'],['E Class','448'],['GLB','2738']]],['57',[['Hatch','2414']]],['61',[['Navara','522'],['Note','1091'],['Qashqai','1145']]],['67',[['3008','1457']]],['78',[['Toledo','676']]],['80',[['Fabia','679'],['Karoq','2663'],['Superb','683']]],['88',[['Landcruiser','738'],['Rav4','748']]],['93',[['Passat','817'],['Polo','819']]],['94',[['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

}