title: Get path to current emacs script file when loaded with -l parameter
body: <p>From within a lisp file being loaded and run with <code>emacs -l path/to/script/foo.el</code> can I get the path to file being run?</p>
  
  <p>For example, is there some way to determine what <code>path/to/script</code> is from within <code>foo.el</code>?</p>
  
  <p>I am not very experienced with lisp so please be gentle with your solutions.</p>
  
  <p>Emacs 22.3.1 on Windows 7</p>