gistfile1.html

<label>City: </label>
<select name="location" class="dependent-demo4">
  <option></option>
  <option value="238">London > North > Enfield</option>
  <option value="239">London > North > Barnet</option>
  <option value="240">London > South > Croydon</option>
  <option value="241">London > South > Bromley</option>
  <option value="242">London > South > Sutton</option>
  <option value="243">Bristol > St Pauls</option>
  <option value="244">Bristol > Horfield</option>
  <option value="245">Bristol > Bedminster</option>
  <option value="246">Bournemouth</option>
</select>