title: jQuery css background-image on Safari downloads image again on revisit
body: <p>I'm using jQuery to set a background-image to a piece of my website like this:</p>
  
  <pre><code>$('.header-image').css('background-image', 'url(/img/image.jpg)');
  </code></pre>
  
  <p>However, when I get back to that page from some other place using Safari, I can see in the network manager that it downloads that image again, whereas Chrome and Firefox do not.</p>
  
  <p>Any idea what is going on?</p>
  
  <p>Edit: The image is 500kb, tried with another at 300kb, produced same result.</p>
  
  <p>Edit: Corrected the quotes around the url, which are present in my code and don't affect the problem I have.</p>