Ciao a tutti, vorrei un vostro parere...

Vorrei validare una pagina con questo doctype
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

Il problema è che mi spara questi errori e non so dove mettere le mani

Validation Output: 9 Errors

1. Error Line 235, Column 8: end tag for "script" omitted, but OMITTAG NO was specified

</ht…

You may have neglected to close an element, or perhaps you meant to "self-close" an element, that is, ending it with "/>" instead of ">".
2. Info Line 8: start tag was here

><script type="text/javascript" >

3. Error Line 235, Column 8: end tag for "head" omitted, but OMITTAG NO was specified

</ht…

✉

You may have neglected to close an element, or perhaps you meant to "self-close" an element, that is, ending it with "/>" instead of ">".
4. Info Line 3: start tag was here

><head>

5. Error Line 235, Column 8: "html" not finished but document ended

</ht…

6. Error Line 235, Column 8: end tag for "html" omitted, but OMITTAG NO was specified

</ht…

You may have neglected to close an element, or perhaps you meant to "self-close" an element, that is, ending it with "/>" instead of ">".
7. Info Line 2: start tag was here

><html xmlns="http://www.w3.org/1999/xhtml" >

8. Error Line 235, Column 8: missing marked section end

</ht…

9. Info Line 9, Column 2: marked section started here

//<![CDATA[

10. Error Line 235, Column 7: XML Parsing Error: CData section not finished

</html>


11. Error Line 235, Column 7: XML Parsing Error: Premature end of data in tag script line 8

</html>


12. Error Line 235, Column 7: XML Parsing Error: Premature end of data in tag head line 3

</html>

13. Error Line 235, Column 7: XML Parsing Error: Premature end of data in tag html line 2

</html>