| Title | Alternative text for object with both image and image map inside object |
|---|---|
| Description | A document with an object element in an image map, where the image map code is inside the object element. The object element embeds an image in PNG format, and
contains an img element with the GIF version of the same image.
The alt attribute of the img element identifies the image and conveys the same information.
The object element does not have a title attribute or any other text alternative except the alt attribute of the img element.
|
| Creator | BenToWeb (Christophe.Strobbe@…) |
| Rights | Copyright BenToWeb 2005-2007 |
| Language | English |
| Date | 2005-08-26 |
| Status | accepted for end user evaluation |
Technologies are markup languages or data formats. If the technology is a markup language, “features” refers to elements and attributes.
XHTML™ 1.0 The Extensible HyperText Markup Language (Second Edition)
Feature: img
(namespace: http://www.w3.org/1999/xhtml)
.
Technical specification: How to specify alternate text .
Feature: object
(namespace: http://www.w3.org/1999/xhtml)
.
Technical specification:
General Inclusion: The object element
.
Feature: map
(namespace: http://www.w3.org/1999/xhtml)
.
Technical specification: How to create client-side image maps .
Feature: area
(namespace: http://www.w3.org/1999/xhtml)
.
Technical specification:
Client-side image maps: the map and area elements
.
This test case is intended to pass because the image has an appropriate text alternative in the img element that serves as a fallback for the object element.
However, browser support for the object element may determine if this test case is accessible or not. Internet Explorer (version 6 or earlier) has weak or no support for the object element.
Only the image itself is tested, not the image map.
Accessibility expert.
“Rules” refer to success criteria in WCAG 2.0, checkpoints in WCAG 1.0 and similar requirements.
The test case fails the following success criterion at line 15, column 7: http://www.w3.org/TR/2007/WD-WCAG20-20070517/Overview.html#text-equiv-all.
The image has a fallback with a text description.
The object element has an img element with an alt attribute as a fallback. Since there is no direct text alternative, it is not entirely clear if this code is accessible.
This test case is identical to xhtml1_wcag2_20050630_1.1_l1_sc1_011 , except that the map is now inside the object element.
(In Mozilla 1.7.3 and Firefox 1.0, the map does not work if the map element has only an id and no name attribute.)
(Internet Explorer 6.0 on Windows 2000 does not support object but displays the fallback image; Internet Explorer 6.0 on Windows XP does not display the fallback image.)@@
This test case maps to technique H53: Using the body of the object element.
The test case fails the following success criterion at line 15, column 7: http://www.w3.org/TR/2006/WD-WCAG20-20060427/guidelines.html#text-equiv-all.
The image has a fallback with a text description. User testing with screen reader users provided the following results: most users of speech output could understand the image, but most users (5 out of 7) of a Braille display could not. (All were users of Internet Explorer 6 or 7.)
The object element has an img element with an alt attribute as a fallback. Since there is no direct text alternative, it is not entirely clear if this code is accessible.
This test case is identical to xhtml1_wcag2_20050630_1.1_l1_sc1_011, except that the map is now inside the object element.
(In Mozilla 1.7.3 and Firefox 1.0, the map does not work if the map element has only an id and no name attribute.)
(Internet Explorer 6.0 on Windows 2000 does not support object but displays the fallback image; Internet Explorer 6.0 on Windows XP does not display the fallback image.)@@
Online version: sc1.1.1_l1_012.
The test case needs review before it can be established if it passes or fails the following success criterion: http://www.w3.org/TR/2006/WD-WCAG20-20050630/#text-equiv-informative. The code that causes doubt can be found at line 15, column 7.
The image has a fallback with a text description.
The object element has an img element with an alt attribute as a fallback. Since there is no direct text alternative, it is not entirely clear if this code is accessible.
This test case is identical to xhtml1_wcag2_20050630_1.1_l1_sc1_011, except that the map is now inside the object element.
(In Mozilla 1.7.3 and Firefox 1.0, the map does not work if the map element has only an id and no name attribute.)
(Internet Explorer does not support object but displays the fallback image.)