Below are the results of attempting to parse this document with an SGML parser.
1. Error Line 38 column 44: there is no attribute "MARGINHEIGHT".
...id="Table_01"width="800"marginheight="762" border="0"cellpadding="0"cellspaci
You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute. If you received this error when using the <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash.
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2. Error Line 38 column 90: document type does not allow element "TABLE" here.
...der="0"cellpadding="0"cellspacing="0">
The element named above was found in a context where it is not allowed. This could mean that you have incorrectly nested elements -- such as a "style" element in the "body" section instead of inside "head" -- or two elements that overlap (which is not allowed).
One common cause for this error is the use of XHTML syntax in HTML documents. Due to HTML's rules of implicitly closed elements, this error can create cascading effects. For instance, using XHTML's "self-closing" tags for "meta" and "link" in the "head" section of a HTML document may cause the parser to infer the end of the "head" section and the beginning of the "body" section (where "link" and "meta" are not allowed; hence the reported error).
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3. Error Line 44 column 44: there is no attribute "BACKGROUND".
... height="135" colspan="4" background="http://forum.ragezone.com/images/Untitled-1_03.png"><div align="c
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4. Error Line 83 column 6: end tag for "TABLE" omitted, but its declaration does not permit this.
</html>
* You forgot to close a tag, or
* you used something inside this tag that was not allowed, and the validator is complaining that the tag should be closed before such content can be allowed.
The next message, "start tag was here" points to the particular instance of the tag in question); the positional indicator points to where the validator expected you to close the tag.
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5. Info Line 38 column 0: start tag was here.
<table id="Table_01"width="800"marginheight="762" border="0"cellpadding="0"cells
6. Error Line 83 column 6: end tag for "HTML" which is not finished.
</html>
Most likely, You nested tags and closed them in the wrong order. For example <p><em>...</p> is not acceptable, as <em> must be closed before <p>. Acceptable nesting is: <p><em>...</em></p>
Another possibility is that you used an element which requires a child element that you did not include. Hence the parent element is "not finished", not complete. For instance, <head> generally requires a <title>, lists (ul, ol, dl) require list items (li, or dt, dd), and so on.