I'm not sure what IR refers to. Here's the the CSS rule explained:
a[href]:focus { /* select any anchor with an attribute href that has focus */
-moz-outline: /* mozilla implementation of a non standard, or non ratified CSS property. see below for explantion. Outline creates a border around the object that doesn't disturb the flow of the document */
2px solid -moz-mac-focusring; /* outline has the same properties as border, the color is a moz extension that displays the OS focus-ring color (c.f. IE/MAC and Safari focusrings) */
}
A discussion about CSS vendor specific CSS rules is here:
http://www.w3.org/TR/2003/WD-css3-syntax-20030813/#vendor-specific
In short it says:
"Although proprietary extensions should be avoided in general, there are situations (experiments, implementations of W3C drafts that have not yet reached Candidate Recommendation, intra-nets, debugging, etc.) where it is convenient to add some nonstandard, i.e., proprietary identifiers to a CSS style sheet."
To avoid clashes with with future specs vendors should prefix their rules with vendor ids.
known id's include: # mso- (Microsoft Corporation) # -moz- (The Mozilla Organization) # -opera- (Opera Software) # -atsc- (Advanced Television Standards Committee) # -wap- (The WAP Forum) # -k (or is it -khtml?) Safari, Konqueror.
cheers Terrence Wood.
On 2004-12-01 8:13 AM, Chris Kennon wrote:
Hi,
Would you explain the abbreviation IR and what is the name, and where can I read about this rule:
a[href]:focus {-moz-outline: 2px solid -moz-mac-focusring;}
On Tuesday, November 30, 2004, at 05:38 AM, Philippe Wittenbergh wrote:
IR techniques. a[href]:focus {-moz-outline: 2px solid -moz-mac-focusring;}
_______________________________ "Knowing is not enough, you must apply; willing is not enough, you must do." ---Bruce Lee
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