Topic awaiting preservation: optgroup behavior in IE

Hi,
I tried to use optgroup and some other options attribute in IE6.
It looks like the optgroup title and the disabled attribute (as well with the title attribute and display style on the option) is not working on IE6.
Do you know any workarown/solution in IE?
Following is the code i've used (copied from http://www.w3schools.com/tags/tag_optgroup.asp)

<select>

	<optgroup title="Swedish Cars" label="Swedish Cars Title">

		<option disabled value ="volvo">Volvo</option>

		<option style="display:none" value ="Invisible">Invisible Item</option>

		<option value ="saab" title="This is a single option title">Saab</option>

	</optgroup>

	<optgroup label="German Cars" disabled>

		<option value ="mercedes">Mercedes</option>

		<option value ="audi">Audi</option>

	</optgroup>

</select>

Regards,
Yossi Admon

indeed... my html reference doesn't list optgroup as supported by IE - in any version.

It is partly supported in IE6 (have no less version to check the issue) at least from the label perspective.

According to MSDN:

http://msdn.microsoft.com/library/default.asp?url=/workshop/author/dhtml/reference/objects/optgroup.asp

The "optgroup" element is only available as of IE6.

The page shows the disabled attribute is valid, although it mentioned nothing about a "title" attribute, si I'm guessing this is not valid.

Hope this helps,
Dan