title: Can I use Ext's loader to load non-ext scripts/object dynamically?
body: <p>In my ExtJS 4.0.7 app I have some 3rd party javascripts that I need to dynamically load to render certain panel contents (some fancy charting/visualization widgets).</p>
  
  <p>I run in to the age-old problem that the script doesn't finish loading before I try to use it.  I thought ExtJS might have an elegant solution for this (much like the class loader: Ext.Loader).  </p>
  
  <p>I've looked at both Ext.Loader and Ext.ComponentLoader, but neither seem to provide what I'm looking for.  Do I have to just "roll my own" and setup a timer to wait for a marker variable to exist?</p>