title: Create default folder locations for quick reference...with mixins?
body: <p>I'm not sure if this is possible to achieve with mixins specifically, but hey, that's why I'm here.</p>
  
  <p>I'm a recent convert to sass, and I'm working on a site with quite long path names. e.g. '<a href="http://mysite.com/sites/mysite.com/themes/mytheme/images" rel="nofollow">http://mysite.com/sites/mysite.com/themes/mytheme/images</a>...'</p>
  
  <p>It can get tedious either having to type, or copy and paste this long pathname, if I'm trying to add a background image to a class. So I was really hoping there was a way to create either a mixin, or some other bit of sass goodness that would allow me to do something like the following;</p>
  
  <pre><code>.class_name {
      background: url(image_folder('image_name.png'));
  }
  </code></pre>
  
  <p>Not only would this save me a good chunk of time, but the site I'm working on has multiple image folder locations, so if I could set up a few different folder locations it would be brilliant.</p>
  
  <p>As I mentioned I'm pretty new to sass so I don't know where to start with this</p>