Also known as the full standards mode.
Also known as the almost standards mode.
Also known as the mode you should not use.
This test requires JavaScript.
This page tests which layout mode is triggered when the page is an XML page, containing actually XHTML which is transformed to true XHTML page by using an XSL stylesheet.
This test page is derived from a doctype and media type test.
All browsers handle the page correctly as XML and check for well formedness.
Internet Explorer 7 and 6: this page is in quirks mode.
Opera 9.25: this page is in no quirks mode but without JavaScript.
Opera 9.5, Firefox, Safari 3: this page is in no quirks mode.
test.xml and xhtml11.xsl.
This page tests for layout mode used by the browser when page is served as XML.
There are three modes: quirks mode, limited quirks mode and no quirks mode.
Internet Explorer 7 and 6 don't have a real non-quirks mode, it is similar to the limited quirks mode of the other browsers. IE 5.5 and before only have a quirks mode.
Test is done via automatic CSS validity and JavaScript checks. Incorrect behavior reveals quirks mode or limited quirks mode.
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