HTML / CSS: Nested in a <select> field?

Question

Is it possible to create nested option fields in a form drop down, much like you would create nested ul lists?

Since the change is just aesthetical, is it possible t

Answer 1

You can use to create a single level of nesting...

  
     Option 1.1
     Option 1.2
  
  
     Option 2.1
     Option 2.2
  

Example: http://jsfiddle.net/JaZAm/1/

Note that the group labels are not selectable options. In that case, I would recommend using the text-indent solution that is mentioned in the top answer to the question that home linked to in his comment.