});
            return node;
        }

        // generates a tree for the given module by finding the insight among the given moduleInsights,
        // and displays the insight div
        function showModuleInsight(module, moduleInsights) {
            var $insightDiv = $('#insight');
            $insightDiv.html('');
            $insightDiv.append($('<i> </i>').attr('id', 'dismissInsight').attr('title', 'Close'));