Is it possible to style a mouseover on an image map using CSS?

I have an image on a web page that also requires links. I am using an image map to create the links and I am wondering if there is a way to style the area shape on mouseover for a minor touch of interactivity. Is this possible?

I tried this without success:

html

<img src="{main_photo}" alt="locations map"  usemap="#location-map" />
<map name="location-map">
    <area shape="rect" coords="208,230,290,245" href="{site_url}locations/grand_bay_al" />
    <area shape="rect" coords="307,214,364,226" href="{site_url}locations/mobile_al" />
    <area shape="rect" coords="317,276,375,290" href="{site_url}locations/loxley_al" />
</map>

css

area { border: 1px solid #d5d5d5; }

Any suggestions?

Solution 1:

CSS Only:

Thinking about it on my way to the supermarket, you could of course also skip the entire image map idea, and make use of :hover on the elements on top of the image (changed the divs to a-blocks). Which makes things hell of a lot simpler, no jQuery needed...

Short explanation:

• Image is in the bottom
• 2 x a with display:block and absolute positioning + opacity:0
• Set opacity to 0.2 on hover

Example:

.area {
    background:#fff;
    display:block;
    height:475px;
    opacity:0;
    position:absolute;
    width:320px;
}
#area2 {
    left:320px;
}
#area1:hover, #area2:hover {
    opacity:0.2;
}

<a id="area1" class="area" href="#"></a>
<a id="area2" class="area" href="#"></a>
<img src="http://upload.wikimedia.org/wikipedia/commons/thumb/2/20/Saimiri_sciureus-1_Luc_Viatour.jpg/640px-Saimiri_sciureus-1_Luc_Viatour.jpg" width="640" height="475" />

Original Answer using jQuery

I just created something similar with jQuery, I don't think it can be done with CSS only.

Short explanation:

• Image is in the bottom
• Divs with rollover (image or color) with absolute positioning + display:none
• Transparent gif with the actual #map is on top (absolute position) (to prevent call to mouseout when the rollovers appear)
• jQuery is used to show/hide the divs

$(document).ready(function() {
  if ($('#location-map')) {
    $('#location-map area').each(function() {
      var id = $(this).attr('id');
      $(this).mouseover(function() {
        $('#overlay' + id).show();

      });

      $(this).mouseout(function() {
        var id = $(this).attr('id');
        $('#overlay' + id).hide();
      });

    });
  }
});

body,
html {
  margin: 0;
}

#emptygif {
  position: absolute;
  z-index: 200;
}

#overlayr1 {
  position: absolute;
  background: #fff;
  opacity: 0.2;
  width: 300px;
  height: 160px;
  z-index: 100;
  display: none;
}

#overlayr2 {
  position: absolute;
  background: #fff;
  opacity: 0.2;
  width: 300px;
  height: 160px;
  top: 160px;
  z-index: 100;
  display: none;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<img src="http://www.tfo.be/jobs/axa/premiumplus/img/empty.gif" width="300" height="350" border="0" usemap="#location-map" id="emptygif" />
<div id="overlayr1">&nbsp;</div>
<div id="overlayr2">&nbsp;</div>
<img src="http://2.bp.blogspot.com/_nP6ESfPiKIw/SlOGugKqaoI/AAAAAAAAACs/6jnPl85TYDg/s1600-R/monkey300.jpg" width="300" height="350" border="0" />
<map name="location-map" id="location-map">
  <area shape="rect" coords="0,0,300,160" href="#" id="r1" />
  <area shape="rect" coords="0,161,300,350" href="#" id="r2"/>
</map>

Hope it helps..

Solution 2:

With pseudo elements.

HTML:

<div class="image-map-container">
    <img src="https://upload.wikimedia.org/wikipedia/commons/8/83/FibonacciBlocks.png" alt="" usemap="#image-map" />
    <div class="map-selector"></div>
</div>

<map name="image-map" id="image-map">
    <area alt="" title="" href="#" shape="rect" coords="54,36,66,49" />
    <area alt="" title="" href="#" shape="rect" coords="72,38,83,48" />
    <area alt="" title="" href="#" shape="rect" coords="56,4,80,28" />
    <area alt="" title="" href="#" shape="rect" coords="7,7,45,46" />
    <area alt="" title="" href="#" shape="rect" coords="10,59,76,125" />
    <area alt="" title="" href="#" shape="rect" coords="93,9,199,122" />
</map>

some CSS:

.image-map-container {
    position: relative;
    display:inline-block;
}
.image-map-container img {
    display:block;
}
.image-map-container .map-selector {
    left:0;top:0;right:0;bottom:0;
    color:#546E7A00;
    transition-duration: .3s;
    transition-timing-function: ease-out;
    transition-property: top, left, right, bottom, color;
}
.image-map-container .map-selector.hover {
    color:#546E7A80;
}

.map-selector:after {
    content: '';
    position: absolute;
    top: inherit;right: inherit;bottom: inherit;left: inherit;
    background: currentColor;
    transition-duration: .3s;
    transition-timing-function: ease-out;
    transition-property: top, left, right, bottom, background;
    pointer-events: none;
}

JS:

$('#image-map area').hover(
    function () { 
        var coords = $(this).attr('coords').split(','),
            width = $('.image-map-container').width(),
            height = $('.image-map-container').height();
        $('.image-map-container .map-selector').addClass('hover').css({
            'left': coords[0]+'px',
            'top': coords[1] + 'px',
            'right': width - coords[2],
            'bottom': height - coords[3]
        })
    },
    function () { 
        $('.image-map-container .map-selector').removeClass('hover').attr('style','');
    }
)

https://jsfiddle.net/79ebt32x/1/

Solution 3:

I don't think this is possible just using CSS (not cross browser at least) but the jQuery plugin ImageMapster will do what you're after. You can outline, colour in or use an alternative image for hover/active states on an image map.

http://www.outsharked.com/imagemapster/examples/usa.html