function SetCharSet($charset_name)
	{
		$this->GetCharSet();
		if ($this->charSet !== $charset_name) {
			$if = pg_set_client_encoding($this->_connectionID, $charset_name);
			if ($if == "0" & $this->GetCharSet() == $charset_name) {
				return true;
			} else return false;
		} else return true;
	}