Errors:
Obsolete doctype. Expected “<!DOCTYPE html>”.
Attribute “xmlns:v” not allowed here.
Attribute “xmlns:fb” not allowed here.
Bad value “” for attribute “id” on element “body”: An ID must not be the empty string.
Element “a” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “causes-tab”.
Element “div” not allowed as child of element “h1” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “flash_container”.
Attribute “webkitallowfullscreen” not allowed on element “iframe” at this point.
Attribute “mozallowfullscreen” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Duplicate ID “vimeo_player”.
Attribute “alt” not allowed on element “a” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
Duplicate ID “course_menu_dialog”.
Duplicate ID “course_menu”.
Duplicate ID “course_menu_header”.
Duplicate ID “course_dialog_course_dropdown”.
Duplicate ID “course_menu_course_list”.
Duplicate ID “course_menu_back”.
Duplicate ID “course_menu_back_button”.
Duplicate ID “all_courses_box”.
Duplicate ID “course_topic_boxes”.
Duplicate ID “course_search_results”.
Warnings:
Attribute with the local name “xmlns:v” is not serializable as XML 1.0.
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
Consider avoiding viewport values that prevent users from resizing documents.
The “type” attribute is unnecessary for JavaScript resources.
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “causes-tab” was here.
The first occurrence of ID “flash_container” was here.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The first occurrence of ID “vimeo_player” was here.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The first occurrence of ID “course_menu_dialog” was here.
The first occurrence of ID “course_menu” was here.
The first occurrence of ID “course_menu_header” was here.
The first occurrence of ID “course_dialog_course_dropdown” was here.
The first occurrence of ID “course_menu_course_list” was here.
The first occurrence of ID “course_menu_back” was here.
The first occurrence of ID “course_menu_back_button” was here.
The first occurrence of ID “all_courses_box” was here.
The first occurrence of ID “course_topic_boxes” was here.
The first occurrence of ID “course_search_results” was here.
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