It seems kinda jumbled with my firefox settings, but here is what the web developer toolbar says:
HTML:
# Line 117, Column 10: ID "NAV-WESTERN" already defined.
<li id="nav-Western"><a href="http://www.bmoore.net/western_civ_h.html">Wester
✉
An "id" is a unique identifier. Each time this attribute is used in a document it must have a different value. If you are using this attribute as a hook for style sheets it may be more appropriate to use classes (which group elements) than id (which are used to identify exactly one element).
# Info Line 116, Column 10: ID "NAV-WESTERN" first defined here.
<li id="nav-Western"><a href="http://www.bmoore.net/western_civ_a.html">Wester
# Error Line 123, Column 8: ID "NAV" already defined.
<ul id="nav">
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An "id" is a unique identifier. Each time this attribute is used in a document it must have a different value. If you are using this attribute as a hook for style sheets it may be more appropriate to use classes (which group elements) than id (which are used to identify exactly one element).
# Info Line 115, Column 8: ID "NAV" first defined here.
<ul id="nav">
# Warning Line 129, Column 80: cannot generate system identifier for general entity "NodeID".
…atboro-horsham.org/public/?4068Nav=|&NodeID=661" target="main">PS Parent Acce
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An entity reference was found in the document, but there is no reference by that name defined. Often this is caused by misspelling the reference name, unencoded ampersands, or by leaving off the trailing semicolon (;). The most common cause of this error is unencoded ampersands in URLs as described by the WDG in "Ampersands in URLs".
Entity references start with an ampersand (&) and end with a semicolon (;). If you want to use a literal ampersand in your document you must encode it as "&" (even inside URLs!). Be careful to end entity references with a semicolon or your entity reference may get interpreted in connection with the following text. Also keep in mind that named entity references are case-sensitive; &Aelig; and æ are different characters.
If this error appears in some markup generated by PHP's session handling code, this article has explanations and solutions to your problem.
Note that in most documents, errors related to entity references will trigger up to 5 separate messages from the Validator. Usually these will all disappear when the original problem is fixed.
# Error Line 129, Column 80: general entity "NodeID" not defined and no default entity.
…atboro-horsham.org/public/?4068Nav=|&NodeID=661" target="main">PS Parent Acce
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This is usually a cascading error caused by a an undefined entity reference or use of an unencoded ampersand (&) in an URL or body text. See the previous message for further details.
# Error Line 129, Column 86: reference to entity "NodeID" for which no system identifier could be generated.
…-horsham.org/public/?4068Nav=|&NodeID=661" target="main">PS Parent Access</a>
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This is usually a cascading error caused by a an undefined entity reference or use of an unencoded ampersand (&) in an URL or body text. See the previous message for further details.
# Info Line 129, Column 79: entity was defined here.
…hatboro-horsham.org/public/?4068Nav=|&NodeID=661" target="main">PS Parent Acc
And CSS:
69 #nav a:link, #nav a:visited Property text-shadow doesn't exist in CSS level 2.1 but exists in [css2, css3] : 2px 2px 2px #555
86 #Western #nav-Western a, #Global #nav-Global a, #Gov #nav-Gov a, #Homework #nav-Homework a, #Notes #nav-Notes a, #Current #nav-Current a, #10th #nav-10th a, #Philosophy #nav-Philosophy a, #Blackthorn #nav-Blackthorn a, #HH #nav-HH a, #PS #nav-PS a In CSS1, an id name could start with a digit ("#55ft"), unless it was a dimension ("#55in"). In CSS2, such ids are parsed as unknown dimensions (to allow for future additions of new units) To make ".10th" a valid id, CSS2 requires the first digit to be escaped ("#\310th")
93 #Western #nav-Western a, #Global #nav-Global a, #Gov #nav-Gov a, #Homework #nav-Homework a, #Notes #nav-Notes a, #Current #nav-Current a, #10th #nav-10th a, #Philosophy #nav-Philosophy a, #Blackthorn #nav-Blackthorn a, #HH #nav-HH a, #PS #nav-PS a Property text-shadow doesn't exist in CSS level 2.1 but exists in [css2, css3] : none
101 #Western #nav-Western a:hover, #Global #nav-Global a:hover, #Gov #nav-Gov a:hover, #Homework #nav-Homework a:hover, #Notes #nav-Notes a:hover, #Current #nav-Current a:hover, #10th #nav-10th a:hover, #Philosophy #nav-Philosophy a:hover, #Blackthorn #nav-Blackthorn a:hover, #HH #nav-HH a:hover, #PS #nav-PS a:hover In CSS1, an id name could start with a digit ("#55ft"), unless it was a dimension ("#55in"). In CSS2, such ids are parsed as unknown dimensions (to allow for future additions of new units) To make ".10th" a valid id, CSS2 requires the first digit to be escaped ("#\310th")