| Stage |
Explanation |
| Original HTML Page |
This is a local copy of the XML.Gov home page
before any modifications.
The images are missing since they were not copied to my server.
To validate the original page, go to
http://validator.w3.org/,
paste in the URL http://xml.gov/,
and select "HTML 4.01 Transitional".
Alternatively, you can view the previously generated
validation results.
|
| Base Added |
This version differs from the original only by the addition of a
<base href="http://xml.gov/"> reference so
that the images would be visible during later stages.
|
| Tidy Version |
Next step is to convert the file from HTML to XHTML using
HTML Tidy.
Although the result looks very much the previous one in your browser,
the conversion results in source that is significantly different from the
original, especially with respect to the use of CSS replacing
font and align=center tags and color information.
However, this does not result in valid XHTML due to a few problems it could not
fix. So we again validate it by going to
http://validator.w3.org/,
pasting in the URL http://kensall.com/gov/xhtml/tidy-XML_gov-x.html,
and selecting "XHTML 1.0 Transitional".
Alternatively, you can view the previously generated
validation results.
|
| Valid XHTML 1.0 |
After making the edits suggested by validation of the output from Tidy,
we again validate and see the final result. We can optionally insert the
XHTML and CSS icons (as W3C suggests) to make it much easier to validate
the document in the future (i.e., after later edits). This method depends
on the HTTP_REFERER so the files must be on a server to validate via the
icons. (These are the same icons that appear at the bottom of this demo page.)
|
