Have you tested it in every browser known to man? :)<BR><BR>Seriously though, the example you gave works in every browser I know of. But it's not valid HTML and it's possible that some browsers will choke on it. The HTML spec states that quotes are REQUIRED unless the attribute values only contain letters (a-z and A-Z), digits (0-9), hyphens (ASCII decimal 45), periods (ASCII decimal 46), underscores (ASCII decimal 95), and colons (ASCII decimal 58).<BR><BR>All browsers will have trouble with attributes that contain spaces. Like you might have in form tags. Other special characters could also cause problems. The HTML spec goes further and says that they recommend ALWAYS using quotes around attributes. In XHTML you have no choice. You have to use quotes.