Roll-over Controls

ISSUE:

Web page controls that load a new page or otherwise move a user from their current location when a mouse-pointer is placed on the control may make navigation difficult or impossible for visitors who must navigate using a keyboard only, those who have trouble controlling a mouse and those whose equipment does not support a mouse or similar pointing device. Roll-overs that change the appearance of a control or cause additional information to be displayed GENERALLY do not cause a problem for screen-reader users and may provide useful feedback for users with learning disabilities or mobility impairments. However, screen-reader users will not be able to access pop-up information or menus. Be sure to include the text of pop-up information in the ALT tag for the graphic and provide redundant links for pop-up menu items.

STANDARD:

• Do not use roll-over controls that LOAD A NEW PAGE OR OTHERWISE move the user from the current location.



• Avoid the use of THE "onChange" EVENT-HANDLER in a drop-down list.



• Include text descriptions and redundant links for pop-up information and menus.