Line 44, Column 397: end tag for "SCRIPT" omitted, but its declaration does not permit this.
…="72" border="0" alt="NetAgent" /></a>');
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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.
Line 42, Column 33: start tag was here.
<a href="http://www.netagent.cz"><script language="JavaScript" type="text/javasc
Line 45, Column 13: end tag for element "SCRIPT" which is not open.
//--></script></a><noscript><a href="http://www.netagent.cz" target="_top"><img
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The Validator found an end tag for the above element, but that element is not currently open. This is often caused by a leftover end tag from an element that was removed during editing, or by an implicitly closed element (if you have an error related to an element being used where it is not allowed, this is almost certainly the case). In the latter case this error will disappear as soon as you fix the original problem.
If this error occurred in a script section of your document, you should probably read this FAQ entry.
Line 45, Column 17: end tag for element "A" which is not open.
//--></script></a><noscript><a href="http://www.netagent.cz" target="_top"><img
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The Validator found an end tag for the above element, but that element is not currently open. This is often caused by a leftover end tag from an element that was removed during editing, or by an implicitly closed element (if you have an error related to an element being used where it is not allowed, this is almost certainly the case). In the latter case this error will disappear as soon as you fix the original problem.
If this error occurred in a script section of your document, you should probably read this FAQ entry.
Line 45, Column 204: NET-enabling start-tag requires SHORTTAG YES.
…t="NetAgent" width="100" height="72" /></a></noscript>
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The sequence <FOO /> can be interpreted in at least two different ways, depending on the DOCTYPE of the document. For HMTL 4.01 Strict, the '/' terminates the tag <FOO (with an implied '>'). However, since many browsers don't interpret it this way, even in the presence of an HMTL 4.01 Strict DOCTYPE, it is best to avoid it completely in pure HTML documents and reserve its use solely for those written in XHTML.
