docs: function getDirectoriesInURL()
  {
  	var trail = document.location.pathname.split( PATH_SEPARATOR );
  
  	// check whether last section is a file or a directory
  	var lastcrumb = trail[trail.length-1];
  	for( var i = 0; i < FILE_EXTENSIONS.length; i++ )
  	{
  		if( lastcrumb.indexOf( FILE_EXTENSIONS[i] ) )
  		{
  			// it is, remove it and send results
  			return trail.slice( 1, trail.length-1 );
  		}
  	}
  
  	// it's not; send the trail unmodified
  	return trail.slice( 1, trail.length );
  }