I have used a free service that checks documents like HTML and XHTML for conformance to W3C Recommendations and other standards http://validator.w3.org/detailed.html to check http://www.zope.org/Register/register.html "W3C writing" File: register[1].html Doctype: Encoding: I was not able to extract a character encoding labeling from any of the valid sources for such information. Without encoding information it is impossible to validate the document. The sources I tried are: a.. The HTTP Content-Type field. b.. The XML Declaration. c.. The HTML "META" element. And I even tried to autodetect it using the algorithm defined in Appendix F of the XML 1.0 Recommendation. Since none of these sources yielded any usable information, I will not be able to validate this document. Sorry. Please make sure you specify the character encoding in use.
I correct this line <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/REC-html4.01/loose.dtd"> instead of <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"> notice the change 4.0 to 4.01 because it is not html 4.0 if you don't share this idea forgive me but note that is surely not html 40 and I add <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> and checked again the file
Errors: 20 * Line 189, column 69: cannot generate system identifier for general entity "origin_url" This page is not Valid {HTML 4.01} Transitional! Below are the results of attempting to parse this document with an SGML parser. ... attached file www.quantax.com errors 70 http://www.nuxeo.com errors 101 http://www.zopera.org errors 126 http://www.hotmail.com errors 185 http://www.freezope.org errors 192 http://yahoo.com errors 233 http://www.zopelabs.com/ errors 326 http://www.microsoft.com errors 489 http://www.macromedia.com errors 618 http://www.postnuke.com 631 (once erroneous doctypes were corrected)