Question

As per screenshot below. I am pretty sure someone has done this before! =)

The circle is a bonus, would be very happy with a solution that allows highlighting of a given “div”

Answer 1

See example of the following here →

No need for a plugin. This can be accomplished with very little jQuery code, showing a blackout overlay with the selected div at a z-index above it:

$('.expose').click(function(e){
    $(this).css('z-index','99999');
    $('#overlay').fadeIn(300);
});

$('#overlay').click(function(e){
    $('#overlay').fadeOut(300, function(){
        $('.expose').css('z-index','1');
    });
});

According to the following HTML & CSS… just add the expose class to any element you want isolated on click:

<div class="expose">Some content</div>
<textarea class="expose">Some content</textarea><br />
<input type="text" class="expose" value="Some content" /><br />
<div id="overlay"></div>

.expose {
    position:relative;
}

#overlay {
    background:rgba(0,0,0,0.3);
    display:none;
    width:100%; height:100%;
    position:absolute; top:0; left:0; z-index:99998;
}

See example →