Script to Change the db owner of all databases

I was in need of a script to change the owner of all the database in a server. I checked in the internet but couldnt find any thing so I made this by myself :)

DECLARE curDBNames CURSOR READ_ONLY FOR  SELECT name FROM sys.databases where

name NOT IN('master', 'model', 'msdb', 'tempdb','resource') and state = 0

DECLARE @dbName as varchar(1000)

DECLARE @Sql as varchar(1000)

declare @dbOwnerName as varchar(100)

set @dbOwnerName = 'sa'

OPEN curDBNames

      --PRINT @@ROWCOUNT           

      FETCH NEXT FROM curDBNames INTO @dbName

      WHILE @@FETCH_STATUS = 0

      BEGIN

     

            set @Sql = 'use [' + @dbName + ']'

        exec (@Sql)                      

        set @Sql = 'sp_changedbowner ' + @dbOwnerName

        exec (@Sql)

            FETCH NEXT FROM curDBNames INTO @dbName

      END  

      CLOSE curDBNames

      DEALLOCATE curDBNames
Hope you like the script. Let me know if something doesnt work. As usual pls double check before you try this in your production environment.