var dyn_carsOptionTree = [['7',[['A4','43'],['A6','45'],['TT','63']]],['10',[['3 Series','86'],['4 Series','2375'],['5 Series','87']]],['15',[['Ypsilon','2221']]],['26',[['Focus','253'],['Mondeo','259'],['S-Max','1189']]],['32',[['Accord','278']]],['34',[['i40','2191'],['Tucson','983']]],['39',[['Ceed','1126']]],['44',[['GS','367']]],['49',[['Ghibli','398'],['Gran Turismo','1196']]],['53',[['C Class','444'],['E Class','448'],['Sprinter','883']]],['57',[['Cooper','475']]],['61',[['Qashqai','1145']]],['63',[['Astra','868'],['Insignia','1405']]],['80',[['Octavia','682'],['Superb','683']]],['83',[['BRZ','2417'],['Forester','696'],['Levorg','2602'],['Outback','986'],['XV','2235']]],['85',[['SX4','1236']]],['88',[['Rav4','748']]],['92',[['Astra','785'],['Insignia','1444']]],['93',[['Sharan','822']]],['94',[['V40','852']]]]
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

}