The following missing or conflicting information caused the validator to perform guesswork prior to validation. If the guess or fallback is incorrect, it may make validation results entirely incoherent. It is highly recommended to check these potential issues, and, if necessary, fix them and re-validate the document.
DOCTYPE Override in effect!
The detected DOCTYPE Declaration
"<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">" has been
suppressed and the DOCTYPE for
"XHTML 1.0 Transitional" inserted instead,
but even if no errors are shown below the document will not be Valid
until you update it to reflect this new DOCTYPE.
The document located at <http://www.directory-index.net/> was checked and found to be tentatively valid XHTML 1.0 Transitional. This means that with the use of some fallback or override mechanism, we successfully performed a formal validation using an SGML or XML Parser. In other words, the document would validate as XHTML 1.0 Transitional if you changed the markup to match the changes we have performed automatically, but it will not be valid until you make these changes.
If you would like to create a link to this page (i.e., this validation result) to make it easier to revalidate this page in the future or to allow others to validate your page, the URI is <http://validator.w3.org:80/check?uri=http%3A%2F%2Fwww.directory-index.net%2F> (or you can just add the current page to your bookmarks or hotlist).
If you use CSS in your document, you can check it for validity using the W3C CSS Validation Service.