Errors:
Quirky doctype. Expected “<!DOCTYPE html>”.
The “language” attribute on the “script” element is obsolete. Use the “type” attribute instead.
Internal encoding declaration “iso-8859-1” disagrees with the actual encoding of the document (“utf-8”).
Bad value “text/html; charset=iso-8859-1” for attribute “content” on element “meta”: “iso-8859-1” is not a preferred encoding name. The preferred label for this encoding is “windows-1252”.
Attribute “leftmargin” not allowed on element “body” at this point.
Attribute “topmargin” not allowed on element “body” at this point.
The “bgcolor” attribute on the “body” element is obsolete. Use CSS instead.
The “marginheight” attribute on the “body” element is obsolete. Use CSS instead.
The “marginwidth” attribute on the “body” element is obsolete. Use CSS instead.
The “width” attribute on the “table” element is obsolete. Use CSS instead.
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.
The “bgcolor” attribute on the “table” element is obsolete. Use CSS instead.
The “border” attribute on the “table” element is obsolete. Use CSS instead.
The “align” attribute on the “td” element is obsolete. Use CSS instead.
The “font” element is obsolete. Use CSS instead.
Attribute “bordercolor” not allowed on element “table” at this point.
The “valign” attribute on the “tr” element is obsolete. Use CSS instead.
The “align” attribute on the “table” element is obsolete. Use CSS instead.
The “bgcolor” attribute on the “td” element is obsolete. Use CSS instead.
The “valign” attribute on the “td” element is obsolete. Use CSS instead.
The “width” attribute on the “td” element is obsolete. Use CSS instead.
The “center” element is obsolete. Use CSS instead.
The “align” attribute on the “img” element is obsolete. Use CSS instead.
Attribute “href” not allowed on element “td” at this point.
The “width” attribute on the “col” element is obsolete. Use CSS instead.
Start tag “form” seen in “table”.
Element “form” not allowed as child of element “tr” in this context. (Suppressing further errors from this subtree.)
Stray end tag “form”.
Duplicate attribute “onmouseover”.
Duplicate attribute “onmouseout”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “on” not allowed on element “a” at this point.
Attribute “click” not allowed on element “a” at this point.
Element “img” is missing required attribute “src”.
Attribute “height” not allowed on element “table” at this point.
The “height” attribute on the “td” element is obsolete. Use CSS instead.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
The “marginheight” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginwidth” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
Text not allowed in element “iframe” in this context.
The “nowrap” attribute on the “td” element is obsolete. Use CSS instead.
Stray end tag “input”.
Attribute “width” not allowed on element “select” at this point.
Attribute “value” not allowed on element “input” at this point.
End tag “td” seen, but there were open elements.
Unclosed element “form”.
Attribute “valign” not allowed on element “div” at this point.
Bad value “dataman.pl?c=lib&dir=docs/National Biosurveillance Testbed” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Bad value “dataman.pl?c=lib&dir=docs/ncemi archives” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
No space between attributes.
Attribute “valign” not allowed on element “img” at this point.
Bad value “http://en.wikipedia.org/wiki/Special:Search?search=George Bernard Shaw” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Stray end tag “div”.
Bad value “http://search.yahoo.com/search?p=Krabbe's disease” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Bad value “http://search.yahoo.com/search?p=Depressed ST-segment - causes ” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Bad value “http://ncemi.asatte.org/dataman.pl?c=lib&dir=docs/ncemi archives/” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Bad value “http://ncemi.asatte.org/javascript:;return false;/” for attribute “href” on element “a”: Illegal character in path segment: space is not allowed.
Bad value “http://ncemi.asatte.org/dataman.pl?c=lib&dir=docs/National Biosurveillance Testbed/” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Warnings:
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.