Idea needed for dropdown implementation

I have to implement the following dropdown box. The first开发者_StackOverflow item in the list can't selected and the data will be populated dynamically.

I think you're looking for an optgroup

<select>
  <optgroup label="Choose Types">
    <option>All Types</option>
    <option>CAR</option>
    ...
  </optgroup>
  ...
</select>