Hi Friend,
Here's the answer. Mark it as solved and rate it also :)
<select>
<optgroup title="Test1" label="Menu 1">
<option value="A">A</option>
<option value="B">B</option>
</optgroup>
<optgroup title="Test2" label="Menu 2">
<option value="1">1</option>
<option value="2">2</option>
</optgroup>
</select>
Hope that it is easy explanation. Mark it as solved.
With Regards
Tushar Srivastava