Question

In Firefox, whenever a link is clicked, there is a dotted outline around the item.

Is it possible to modify it so that I can select the div that is being highlighted, or customize the area that it outlines?

Answer 1

In CSS:

a:active{outline:0;border:(customize the border around the active link)}

For a div (using JQuery):

$(function(){ 
    $('div#your-id').click(function(){ 
        $(this).css({'enter the CSS rules for the div here'}); 
    }); 
});

http://docs.jquery.com/CSS/css#name