title: responsive image with maphilight.js
body: <p>My images stop being responsive after I enable maphilight.</p>
  
  <p>First I made the imagemaps responsive with rwdImageMaps.js, works fine. But after I enable maphilight the images themselves stop being responsive. (The imagemaps stay responsive though.)</p>
  
  <p>From chrome inspect: <a href="http://content.screencast.com/users/ludop/folders/Jing/media/63cf1ae6-ebda-4928-b166-e4e2cb2b101f/2014-11-23_1227.png" rel="nofollow">without maphilight</a>, <a href="http://content.screencast.com/users/ludop/folders/Jing/media/f232bd7c-d3f5-4e92-ac62-3f810cd8b7cf/2014-11-23_1228.png" rel="nofollow">With maphilight</a>.</p>
  
  <p>You can see that maphilight.js changes the image with from 100%, responsive to a div with a fixed with and height.
  How can I make the image / div responsive again?
  (I also tried ImageMapster but that resulted in the same issue.)</p>
  
  <p>Can somebody help me solve this? Thanks in advance! ;)</p>