Allows image maps to be used in a responsive design by recalculating the area coordinates to match the actual image size on load and window.resize
- If possible, add correct, unitless 
widthandheightattributes to your image map images. You can override these in CSS to make them responsive. - Add a link to jQuery in your page, preferably at the bottom just before the closing 
</body> - After jQuery, either in a 
<script>block or a separate file, call: 
$('img[usemap]').rwdImageMaps();You may also want to wrap it inside a $(document).ready() function, like so:
$(document).ready(function(e) {
    $('img[usemap]').rwdImageMaps();
});http://mattstow.com/experiment/responsive-image-maps/rwd-image-maps.html
Copyright (c) 2016 Matt Stow
Licensed under the MIT license (see LICENSE for details)
Minified version created with Online YUI Compressor: http://www.refresh-sf.com/yui/