I have a standard type of select list:
<select>
<option value="cars1">Cars 1</option>
<option value="volvo">Volvo</option>
<option value="saab">Saab</option>
<option value="cars2">Cars 2</option>
<option value="mercedes">Mercedes</option>
<option value="audi">Audi</option>
</select>
This is just an example but what I would like to do is to make Cars 1 and Cars 2 in the list as headings that cannot be selected.
Is there some way that I can do this?