Hello Franck,
There are some invalid XHTML codes in your source, for example :
<TABLE width="100%" border=0 cellPadding=0 cellSpacing=0>
XHTML is all lower-case, and you forgot to put "" between 0, then cellpadding is correct but cellPadding is false, cellspacing is correct but cellSpacing is incorrect.
Remember that XHTML is all lower-case.
<embed src='modules/mod_xevidminiPro/Xe-VidMiniV1Pro.swf?automode=0&stretch= ......
To embed flash object while supporting XHTML standard, you can visit this link :
alistapart.com/articles/flashsatay
When using img tag, dont forget to add "alt" and "/" to close the tag.
For example:
<img src="your picture source"> --- Invalid because no alt and no /
<img src="your picture source" /> --- Invalid because no alt specified
<img src="your picture source" alt="This is picture" /> --- Valid ( I always type <img src="your picture source" alt="This is picture" title="This is picture" /> )
<script Language="JavaScript">
Using <script> tag, please specify at least the "type" of script.
<script type="text/javascript" language="JavaScript">
<input name='time_inp' type=text size=18>
Remember to put "/" to close the shorten tag.
<input type="text" name="" />
& must be & to valid the XHTML.
And there are still some incorrect codes... You can correct above codes first, and let we check again after it. 
Best Regards,
Arifin FinLy