http://www.blumarine.gr/prova.html
http://www.blumarine.gr/prova1.html

the 2 page above differs just for the "very complex" animation.

The first did not pass html validation.
The second is ok.
What i'm doing wrong with animation? reported errors seem to be just concerning about opening and colosing tags, which i never put my hands on.Is anybody able to explain me?

You're not doing anything wrong. Most of the "errors" are occurring the SiteSpinner Popup code and aren't errors at all. Rather it is the Validator getting confused about the html tags inside literal strings (I think!).

The remaining error is a complaint about the onResize event and I'm not sure how valid that is either.

The main thing is that your page should work the way you want -- and if it also passes validation that is a bonus.

Yes.At the end that's probably the most important thing for me,but (i don't know if it's true) i red that easier reading (by robots and search engines)of the site, including parameters established by w3c html validator test , is a component for a better consideration in search engines?? I have checked also other site (important) and they don't pass that test so...?

I agree -- it would be nice if pages passed validation. However the code SiteSpinner creates has to run in a variety of browsers, old and new. There are compromises made that sometimes mean the code does not validate, although it still works correctly.

However there are other things that VM could fix. The popup code is perfectly valid, but it could be "fiddled" to make it validate. There are probably other things in this category too -- I seem to remember Foreign Objects (now Embed File or Media) were a problem too.

Version SiteSpinner Pro 2.90b has changed the code generation to prevent those validation errors caused by the validator’s insistence on interpreting the bits of html to be passed to the popup windows, which are inside a comment, as real html. (apparently, the validator is technically allowed to call them errors)

All browsers (and I would imagine, all search engines) that do not understand the onResize() will ignore it but you could take it out manually, if you wanted to. The only side effect would be that your animation would not restart when the page was resized.