Thank you for replying jpadie. I took a look at the actual PHP file. and this is what I found.
function buildViewSelect($viewtype, $args) {
$viewlist[] = mosHTML::makeOption( 'view_day', _CAL_LANG_VIEWBYDAY );
$viewlist[] = mosHTML::makeOption( 'view_week', _CAL_LANG_VIEWBYWEEK )...