Here you go...
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Error: no document type declaration; will parse without validation
Please see
http://htmlhelp.com/faq/html/basics.html#doctypeNote that the missing doctype also throws browsers into quirks mode:
http://hsivonen.iki.fi/doctype/CODE
Error: element script not allowed here; check which elements this element may be contained within
I think this is related to the CSS error. Perhaps the validator thinks the style element is still open, and complains because you can't put a script element inside a style element.
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Error: DOCTYPE declaration not allowed in instance
Ah, there's the doctype. It must be the first line of the document, with nothing before it.
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Error: element html not allowed here; check which elements this element may be contained within
There should be a similar error for the head element. You need to move the style and script elements that appear before the doctype into the head element that comes after the doctype.
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Error: end tag for a omitted; end tags are required in XML for non-empty elements; empty elements require an end tag or the start tag must end with />
You're missing the </a> tag.
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Error: end tag for element p which is not open; try removing the end tag or check for improper nesting of elements
You've got a closing </p> tag but there is no opening <p> tag.
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Error: unknown entity copy
Error: unknown entity nbsp
I think this is related to the doctype problem.
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Warning: character & is the first character of a delimiter but occurred as data
Error: end tag for nobr omitted; end tags are required in XML for non-empty elements; empty elements require an end tag or the start tag must end with />
Embedding scripts into XHTML is troublesome. It's a lot cleaner to move the scripts into external files.
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Error: unknown entity clickLABEL
Error: unknown entity flashLABEL
Error: unknown entity skin
Error: unknown entity text
Error: unknown entity untilColor
Error: unknown entity textColor
Error: unknown entity datesColor
Error: unknown entity year
Error: unknown entity month
Error: unknown entity day
Error: unknown entity hour
Error: unknown entity minute
Error: unknown entity second
Error: unknown entity x
Error: unknown entity y
Warning: reference not terminated by refc delimiter
See
http://htmlhelp.com/tools/validator/problems.html.en#ampCODE
Error: end tag for br omitted; end tags are required in XML for non-empty elements; empty elements require an end tag or the start tag must end with />
If you're going to use XHTML, then you need to use <br /> rather than <br>, and <img ... /> rather than <img ...>.
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Error: end tag for td omitted; end tags are required in XML for non-empty elements; empty elements require an end tag or the start tag must end with />
Error: end tag for element span which is not open; try removing the end tag or check for improper nesting of elements
More missing closing tags.