title: STATIC_URL not working
body: <p>I am struggling to pull media out for my templates using the <strong>STATIC_URL</strong> variable. For example I have this code</p>
  
  <pre><code>{% extends "admin/change_list.html" %}
  {% load i18n %}
  
  {% block extrahead %}
  &lt;!--[if IE]&gt;
  &lt;script type="text/javascript" src="{% firstof STATIC_URL MEDIA_URL %}django_qbe/js/excanvas.js"&gt;&lt;/script&gt;
  &lt;![endif]--&gt;
  &lt;script type="text/javascript" src="{% firstof STATIC_URL MEDIA_URL %}django_qbe/js/jquery.js"&gt;&lt;/script&gt;
  </code></pre>
  
  <p>Each time the template loads it tries to pull off the <strong>MEDIA_URL</strong>. If I change it to</p>
  
  <pre><code>{% extends "admin/change_list.html" %}
  {% load i18n %}
  {% load static %}
  {% block extrahead %}
  &lt;!--[if IE]&gt;
  &lt;script type="text/javascript" src="{% get_static_prefix %}django_qbe/js/excanvas.js"&gt;&lt;/script&gt;
  &lt;![endif]--&gt;
  &lt;script type="text/javascript" src="{% get_static_prefix %}django_qbe/js/jquery.js"&gt;&lt;/script&gt;
  </code></pre>
  
  <p>My question is why doesn't my first version of this template work?</p>