optgroup tag (XHTML 1.1)

option group

Attributes

Attribute	Required	Description
class		space-separated list of classes
dir		direction for weak/neutral text
disabled		unavailable in this context
id		document-wide unique id
label	X	for use in hierarchical menus
lang		language code
multiple
name
size
style		associated style info
tabindex
title		advisory title

Event	Description
onblur
onchange
onclick	a pointer button was clicked
ondblclick	a pointer button was double clicked
onfocus
onkeydown	a key was pressed down
onkeypress	a key was pressed and released
onkeyup	a key was released
onmousedown	a pointer button was pressed down
onmousemove	a pointer was moved within
onmouseout	a pointer was moved away
onmouseover	a pointer was moved onto
onmouseup	a pointer button was released