public static function sidebar_menu_item($icon, $caption, $url, $selected = false) { $icon = "background-image:url('" . self::icon_path($icon) . "')"; $url = URLHelper::admin_url($url); $class = $selected ? 'selected' : ''; return "<li style=\"{$icon}\" class=\"{$class}\"><a href=\"{$url}\">{$caption}</a></li>"; }