Ha mar itt tartunk:
http://validator.w3.org/check?uri=http://numen.uw.hu/home.php =>
This page is not Valid HTML 4.0 Transitional!
# Error Line 46 column 138: document type does not allow element "CENTER" here; missing one of "APPLET", "OBJECT", "MAP", "IFRAME", "BUTTON" start-tag.