SQL Server Backup to MySQL

I want to back up SQL Server Database and than LATER import it into MySQL. Is there any tool for it?

I would rather have portable SQL file(without开发者_运维百科 SQL Server specific SQL)

---

For small and medium databases. I've used script from this page.

http://kofler.info/english/mssql2mysql/

http://kofler.info/uploads/mysql/mssql2mysql.txt