How can I remove the dotted border from <area> elements in Firefox?

Question

In Firefox (current version 14.0.1) I get a dotted outline around some <area> tags that I have created here (http://mediabrands.com.au/). Not only do I see a dotted line, but once it has appeared I can't get rid of it (by clicking another area for example).

I've searched around here and Google for a considerable amount of time, and still haven't managed to get rid of them. They do not appear in any other browsers.

Things I have tried (and all combinations of the below) without success:

• Add outline: none to the img, map and area tags (and their :focus and :active) counterparts.
• Added border: none to each of those.
• Added hidefocus="hidefocus" to each of those.
• Added various combinations using ::-moz-focus-inner{ border: none; outline: none; } to each of those elements.
• Added .focus(function(){ $(this).blur(); }) (jQuery) to each of those.

I believe I've exhausted all the information I've been able to come across - is there any other way to get rid of these lines?

Here is the HTML for quick reference, and for the possibility of something in there being the reason I can't get rid of it:

<img src="anatomy/dial/components/foundation.png" id="dial-map" usemap="#dial" />
<map name="dial">
    <area title="Ansible" class="tab" id="click-ansible" shape="poly" coords="412,419,376,447,313,474,248,487,247,434,327,415,374,377" href="#">
    <area title="Cadreon" class="tab" id="click-cadreon" shape="poly" coords="487,245,478,313,455,366,416,417,378,380,429,299,434,246" href="#">
    <area title="Orion" class="tab" id="click-orion" shape="poly" coords="418,73,453,117,482,191,484,242,431,244,422,180,378,111" href="#">
    <area title="Ensemble" class="tab" id="click-ensemble" shape="poly" coords="247,1,311,10,368,35,415,70,378,108,312,66,244,53" href="#">
    <area title="Reprise" class="tab" id="click-reprise" shape="poly" coords="73,69,111,39,176,8,242,2,243,53,172,66,112,108" href="#">
    <area title="Magna Global" class="tab" id="click-magnaglobal" shape="poly" coords="245,487,186,481,114,450,71,417,110,377,175,423,246,432" href="#">
    <area title="Airborne" class="tab" id="click-airborne" shape="poly" coords="69,414,37,373,12,316,2,244,55,244,68,322,106,375" href="#">
    <area title="Marketing Sciences" class="tab" id="click-analytics" shape="poly" coords="2,242,11,171,33,120,71,74,109,109,70,168,54,241" href="#">
    <area title="MB3" class="tab" id="click-mb3" shape="poly" coords="257,430,178,422,120,384,82,340,140,305,163,337,206,360,262,364,317,342,348,305,404,340,384,367,324,413" href="#">
    <area title="UM" class="tab" id="click-um" shape="poly" coords="307,134,245,116,246,56,309,68,375,109,418,178,430,237,429,288,404,339,350,303,368,246,358,198,344,169" href="#">
    <area title="Initiative" class="tab" id="click-initiative" shape="poly" coords="80,339,63,289,58,235,72,171,109,112,176,67,243,56,242,119,192,128,152,159,126,206,122,261,137,306" href="#">
    <area title="View Website" id="website" shape="poly" coords="173,330,139,292,133,213,161,167,196,143,245,129,305,146,336,176,359,246,339,300,309,335,260,352,209,351" href="#">
</map>

Answer 1

The problem is your blur-focus function on line 151 of dial.js. Removing it fixes the issue.

$("img, area, map").focus(function(event) {
    $(this).blur();
});

To prevent focusing on area elements, set a tabindexto -1, i.e.

<area tabindex="-1" title="Ansible" class="tab" id="click-ansible" shape="poly" coords="...

Demo: http://jsfiddle.net/SO_AMK/K8Adx/

Answer 2

It seems that blurring on focus is causing the problem:

Remove from dial.js:

// Prevent focus of areas.
$("img, area, map").focus(function() {
    $(this).blur();
});

Here is a fiddle I made to simplify everything: http://jsfiddle.net/MadLittleMods/gDrAS/ Comment and uncomment the javascript to see the different results.

---

A solution for the blur and focus is to use event.preventDefault(). So you can replace the what is removed above to:

// Prevent focus of areas.
$("img, area, map").focus(function(e) {
    e.preventDefault();
}); 

There is also a tabindex fix using tabindex="-1" attribute.