160945 - CSS and javascript controled css behaves diferently in XHTML

Status: VERIFIED INVALID

(Core :: DOM: CSS Object Model, defect)

Description

[Martin Novak]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.1b) Gecko/20020721
BuildID:    20020720104

CSS and javascript controled css behaves diferently in XHTML. I specify XHTML 1
transitional (same in strict) DOCTYPE. I use properies from css2 - position:
absolute; left: 120;... - this in css file. But this works even mozilla is
telling me that DOM is in css1 compatibility mode. In javascript I cannot change
these properties what is be me right(as mozilla reports in document.compatMode).
I think that behaviour of style sheets specified in document and javascript dom
should be the same.

Reproducible: Always
Steps to Reproduce:
1. specify doctype XHTML, then create eg. div element and by stylesheet specify
absolute position somewhere in document. It works - it's maybe badly.
2. Then somehow change the position - doesn't work - it's right.
3. 

Expected Results:  CSS 2 shouldn't work in XHTML trans/strict standard mode.

Comment 1

[Boris Zbarsky [:bzbarsky]]

Invalid. "CSS1Compat" merely means "Not violating CSS1".  It does not mean "Not
supporting CSS2".  So we correctly apply all the _valid_ styles.

Now your script is setting styles to invalid values.  For example, it sets:

  tt.style.left = 100;

when "counter" is "100".  But "100" is not a valid value of "left"; "100px"
would be.  So we ignore the invalid value.

See http://www.mozilla.org/docs/web-developer/quirks/ for an explanation of
Mozilla's rendering modes and how these are determined based on doctype. 
"CSS1Compat" corresponds to either Standards or Almost Standards rendering mode
(the string "CSS1Compat" was chosen for IE compatibility; see
http://msdn.microsoft.com/workshop/author/dhtml/reference/properties/compatmode.asp
for IE's documentation and
http://www.mozilla.org/docs/dom/domref/dom_doc_ref11.html for the Mozilla
documentation).

Comment 2

[Kai Lahmann (is there, where MNG is)]

v