site/src/site/layouts/main.groovy

/**
 * This layout accepts the following parameters:
 *
 * @param menu the navigation menu
 * @param pageTitle the page title
 * @param extraStyles , a list of CSS files to be added in the header
 * @param scripts , a list of scripts to be imported
 * @param extraFooter , a section to be added before closing body
 */
layout 'layouts/page.groovy', true,
        mainContent: contents {
            // 'Content'
            div {
                include template: 'includes/topmenu.groovy'

                // main contents goes here!
                mainContent()

                include template: 'includes/bottommenu.groovy'
            }
        }