Compatability Mode Test

The DOCTYPE used in this document is:

<!DOCTYPE HTML PUBLIC "-//O'Reilly and Associates//DTD HTML Extended 1.0//EN">

The MIME type used was text/html. This script does not support testing text/xml modes, and any text sent as text/xml, regardless of DOCTYPE, should be treated as XML, in standards mode.


Expected: quirks mode

standards mode
almost standards mode   quirks mode

Parser: quirks standard mode

CSS: almost standards quirks mode

Note: The first test ("Layout") is valid for Mozilla, Safari and Opera. The last two are only valid for Mozilla as of January 2004, as the other two browsers do not implement the correct behaviour for those tests. (Opera employees can see Opera bug 135100 and Opera bug 135102.)

Type in an FPI:

...or type in a complete DOCTYPE:

...or select one from this list:

See also David's Long List Of Doctypes.