public function depositCredits($targetAccountID, $credits, $donationAmount = null)
	{
		$sql = "SELECT COUNT(account_id) AS accountExists FROM {$this->loginDatabase}.login WHERE account_id = ?";
		$sth = $this->connection->getStatement($sql);
		
		if (!$sth->execute(array($targetAccountID)) || !$sth->fetch()->accountExists) {
			return false; // Account doesn't exist.
		}
		
		$creditsTable = Flux::config('FluxTables.CreditsTable');
		
		if (!$this->hasCreditsRecord($targetAccountID)) {
			$fields = 'account_id, key, index, value';
			$values = '?, ?, ?, ?';
			
			/*if (!is_null($donationAmount)) {
				$fields .= ', last_donation_date, last_donation_amount';
				$values .= ', NOW(), ?';
			}*/
			
			$sql  = "INSERT INTO {$this->charMapDatabase}.`acc_reg_num_db` ($fields) VALUES ($values)ON DUPLICATE KEY UPDATE `value`=`value`+?";
			$sth  = $this->connection->getStatement($sql);
			$vals = array($targetAccountID, '#CASHPOINTS', 0, $credits);
			
			/*if (!is_null($donationAmount)) {
				$vals[] = $donationAmount;
			}*/
			
			return $sth->execute($vals);
		}
		else {
			$vals = array();
			$sql  = "UPDATE {$this->charMapDatabase}.`acc_reg_num_db` SET value = value + ? ";

			/*if (!is_null($donationAmount)) {
				$sql .= ", last_donation_date = NOW(), last_donation_amount = ? ";
			}*/
			
			$vals[] = $credits;
			/*if (!is_null($donationAmount)) {
				$vals[] = $donationAmount;
			}*/
			$vals[] = $targetAccountID;
			
			$sql .= "WHERE account_id = ? and `key` = '#CASHPOINTS'";
			$sth  = $this->connection->getStatement($sql);
			
			return $sth->execute($vals);
		}
	}