Dropdown helper default id property set

[eluser]Remko Posthuma[/eluser]
The dropdown helper does generate a name property but no id property by default. Is it an option to do this by default instead of using the extra? This will make the dropdownbox usable for JS in the page. I have modded line: 260 of form_helper.php to:
$form = '<select name="'.$name.'" id="'.$name.'"'.$extra.$multiple.">\n";