Small validation tip

[flapane]

I've just noticed that changing

Code Select Expand

border="0"
to

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style="border:0"
in line 3007 of functions.inc.php, fixes a few w3c validation warnings, at least when using HTML5.

The border attribute is obsolete. Consider specifying img { border: 0; } in CSS instead

The same goes for line 5567, 4161, or also line 3188 in themes.inc.php (valign attribute).

There are a few things here and there (ie. table width, and icon borders) that can be fixed by using CSS and adding classes in theme.php.
Not that w3c validation is crucial, but it could be worth taking a look at it.