function displayTemplate($params)
		{
			$params["cmd"] = $GLOBALS["cmdToLoad"];
			$GLOBALS["smartyEngine"]->assign("parameters", $params);
			$GLOBALS["smartyEngine"]->display($params["cmd"] . ".tpl");
		}
	
		/** processes request and loads appropriate command based on the definition */
		function process_request()
		{
			$cmdToLoad = $GLOBALS["cmdToLoad"];
			db_open();
			
			$cmdToLoad = strtolower(urldecode($cmdToLoad));
			if (trim($cmdToLoad) == '')
			{
				$cmdToLoad = "homepage";
				$GLOBALS["cmdToLoad"] = $cmdToLoad;
			}
			
			$cmdToLoadFile = $_SERVER['DOCUMENT_ROOT'] . "/web/commands/" . $cmdToLoad . ".php";			
			$cmdToLoadClass = str_replace(" ", "", ucwords(str_replace("_", " ", $cmdToLoad)));			
			
			if (file_exists($cmdToLoadFile))
			{
				//include command file
				include_once($cmdToLoadFile);
				//create new instance of the class
				if (class_exists($cmdToLoadClass))
				{
					$tmpInstance = & new $cmdToLoadClass;
					//execute the command
					$res = $tmpInstance->execute();
					unset($tmpInstance);
					return $res;
				} else
				{
					echo ("<h1>Помилка: Class '" . $cmdToLoadClass .  "' не знайдено.</h1>");
					exit;
				}
			} else
			{
				echo ("<h1>Помилка: не вдається виконати '" . $cmdToLoad . "'.</h1>");
			}
			
			if(db_is_connected()) db_close();
		}// end function process_request

		/** redirects */
		function redirect($loc)
		{
			header("HTTP/1.1 301 Moved Permanently");
			header("Location: $loc");
			exit;
		}// end function redirect