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mslade
Joined: 20 Sep 2008
Posts: 1
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 Posted: Sat Sep 20, 2008 10:54 am Your tutorial page on HTML > img > longdesc |
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This is in reference to:
http://www.htmlcodetutorial.com/images/_IMG_LONGDESC.html
You mention that longdesc is poorly supported and recommend a [D] link following images instead. I think this is irresponsible to present in an educational context. Adoption of new standards on the web usually requires that developers adopt them first, and the UA's follow.
Despite that, longdesc is supported (regardless of how well), and there are UA's that make use of longdesc that are used by surfers with visual disabilities. By discouraging its use to to "poor support" you teach visitors to make their images inaccessible to those visitors through the mechanisms they're no doubt most comfortable with.
If one creates a description page to link to with [D] it takes little extra effort to also supply that page as the longdesc for an image. I suggest changing the tutorial accordingly. |
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PayneLess Designs
Joined: 28 Feb 2007
Posts: 1417
Location: Biloxi, MS
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| Posted: Sun Sep 21, 2008 3:22 pm |
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| Quote: |
longdesc = uri [CT]
This attribute specifies a link to a long description of the image. This description should supplement the short description provided using the alt attribute. When the image has an associated image map, this attribute should provide information about the image map's contents. This is particularly important for server-side image maps. Since an IMG element may be within the content of an A element, the user agent's mechanism in the user interface for accessing the "longdesc" resource of the former must be different than the mechanism for accessing the href resource of the latter. |
No reference to use this for Accessibility by w3c.org, but other sites do reference it in relation to screen readers.
From Wikipedia, the free encyclopedia:
| Quote: |
In HTML, longdesc is an attribute used within the image element, frame element, or iframe element. It is used to reference a long description website of the image, frame, or iframe in question.
Longdesc is often used by screen readers to display image information for computer users with accessibility issues, such as the blind or visually impaired.
This is especially important for image maps and similar images because the links of the maps can be listed on the longdesc page. |
[url=http://www.access-board.gov/sec508/guide/1194.22.htm#(a)]Access Board[/url]
| Quote: |
A text equivalent means adding words to represent the purpose of a non-text element. This provision requires that when an image indicates a navigational action such as "move to the next screen" or "go back to the top of the page," the image must be accompanied by actual text that states the purpose of the image. This provision also requires that when an image is used to represent page content, the image must have a text description accompanying it that explains the meaning of the image.
HTML Source Code: <img src="art/logo-green.gif" alt="Access Board Logo"> |
Will see if it can be reworded along with other changes like putting all tags in lowercase and bringing some of the code up to HTML 4.01/CSS 2.1 Standards. |
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