http://www.xulplanet.com/tutorials/xultu/lists.html http://www.xulplanet.com/reference/elemref/ref_listitem.html A single row in a list box. The text of the listitem is specified either using listcell elements, or by placing a label attribute directly on the listitem element. You may also place other elements inside the listitem for more complex content. nsIAccessibleProvider nsIDOMXULSelectControlItemElement This should be set to a letter that is used as a shortcut key. This letter should be one of the characters that appears in the label text for the listitem. This letter will typically be drawn underlined, although this behavior will be platform and theme specific. When the user presses ALT (or a similar key that varies on each platform) and the access key, the listitem will be activated from anywhere in the window. Although the value is case insensitive, a letter with the case matching the accesskey attribute will used if both cases exist in the label. Indicates whether the listitem is checked or not. Set to the id of a command element that is being observed by the element. If the label of the listitem is too small to fit in its given space, the text will be cropped on the side specified by the crop attribute. An ellipsis will be used in place of the cropped text. If the box direction is reversed, the cropping is reversed. The text will be cropped on its left side. The text will be cropped on its right side. (Deprecated) The text will be cropped on its left side. (Deprecated) The text will be cropped on its right side. The text will be cropped on both sides. The text will be not be cropped using an ellipsis. However, the text will simply be cut off if it is too large. The side depends on the CSS text alignment. This attribute will be set to true if the listitem is the current item. This is typically used by a theme to customize the focus ring. To change the currently selected item in a listbox, use the listbox property selectedItem. Indicates whether the listitem is disabled or not. If this attribute is set to true, the listitem is disabled. This is usually drawn with the text in grey. If the listitem is disabled, it does not respond to user actions. The element cannot be focused and the command event will not fire. The element will still respond to mouse events. To enable the listitem, leave the attribute out entirely as opposed to setting the value to false. Indicates whether the listitem is disabled or not. If this attribute is set to true, the listitem is disabled. This is usually drawn with the text in grey. If the listitem is disabled, it does not respond to user actions. The element cannot be focused and the command event will not fire. The element will still respond to mouse events. To enable the listitem, leave the attribute out entirely as opposed to setting the value to false. The URL of the image to appear on the listitem. If this is attribute is left out, no image appears. The position of the image is determined by the dir and orient attributes. You must use the class 'listitem-iconic' to have an image appear. The label that will appear on the listitem. If this is left out, no text appears. Connects the listitem to a corresponding preference. This attribute only has any effect when used inside a prefwindow. The value of the preference will be updated to match the value property of the listitem. Indicates whether the listitem is selected or not. This property is read only. To change the selection, set either the selectedIndex or selectedItem property of the containing listbox. The tab order of the element. The tab order is the order in which the focus is moved when the user presses the Tab key. Elements with a higher tabindex are later in the tab order sequence. You can make an item in a listbox a checkbox by setting this attribute to the value 'checkbox'. A value associated with the listitem. You may use it in a script for your own purposes. Use this class to have an image appear on the listitem. Specify the image using the image attribute. Returns the accessibility object for the listitem. For checkbox type listitems, indicates whether the listitem is checked or not. You can change the checked property to change the state of the listitem. A CheckboxStateChange event will be sent to the listitem when it is changed either via the checked property or changed by the user. A reference to the listitem's containing listbox. Indicates whether the listitem is disabled or not. If this attribute is set to true, the listitem is disabled. This is usually drawn with the text in grey. If the listitem is disabled, it does not respond to user actions. The element cannot be focused and the command event will not fire. The element will still respond to mouse events. To enable the listitem, leave the attribute out entirely as opposed to setting the value to false.