function _controller($scope, spUtil) {
	/**
	 * Handles simple methods for controlling the display and rendering
	 * of the widget. However this widget has minimal interactions to
	 * handle.
	 * 
	 * @class ExternalLinks.Client
	 * @constructor
	 * @extends Widget.Client
	 * @author Alexander Anderson (cwt_alexander)
	 * @module Widgets
	 */
	
	/**
	 * Flag for tracking if any additional links should be displayed
	 * on the current page.
	 * @property expanded
	 * @type Boolean
	 */
	$scope.expanded = false;
	
	/**
	 * Toggles the expanded flag to extend the list of shown lists as
	 * needed.
	 * @method toggleExpansion
	 */
	$scope.toggleExpansion = function() {
		$scope.expanded = !$scope.expanded;
	};
	
	/**
	 * Resolves additional classes for the widget to apply to itself
	 * for styling based on options.
	 * @method getAdditionalClasses
	 * @return {String} Class names to add based on current options.
	 */
	$scope.getAdditionalClasses = function() {
		var classes;
		
		if($scope.options.transparentBackground) {
			classes = "panel-transparent";
		} else {
			classes = "panel-opaque";
		}
		
		if($scope.options.scale) {
			classes += " scaled-" + $scope.options.scale;
		}
		
		return classes;
	};
}