Recomendation on check for clean_url in the module code.

On line 62 of countdowntimer.module it checks to see if clean_url is enabled. my recommendation is to check it like variable_get('clean_url', 0) and not variable_get('clean_url', 1), since for some reason some Drupal instalations don't have that variable defined, and most people don't have clean_url working at the beginning. This caused me great headache to figure out what was going on, and I had to add $conf = array('clean_url' => 0); to my settings.php page to fix it.