LL_I2L(usecPerSec, PR_USEC_PER_SEC);
LL_I2L(usecPerSec, PR_MSEC_PER_SEC);
static nsresult ConvertMillisecondsToMacTime(PRInt64 aTime, PRUint32 *aOutMacTime){	NS_ENSURE_ARG( aOutMacTime );			PRTime usecPerSec, dateInSeconds;	dateInSeconds = LL_ZERO;		LL_I2L(usecPerSec, PR_USEC_PER_SEC);	LL_DIV(dateInSeconds, aTime, usecPerSec); // dateInSeconds = aTime/1,000	LL_L2UI(*aOutMacTime, dateInSeconds);	*aOutMacTime += 2082844800; // date + Mac epoch		return NS_OK;}