taken into the court

In theory, one could be taken into the court for simply downloading from the Web without authoriztion.

Does the underllined part sound right? Do I have to change it into "taken to court?" Thanks.

Or, in a lower register, you could be hauled into court!

CJ

In this case it means "in a lower diction."

"hauled into court" is relatively low-brow compared to "taken to court".

Register = social register of language. 
Very high register language (Register 3+) is typically considered appropriate for a royal wedding!  Or a presidential speech.  High register (Register 3) is used in formal situations, including formal scientific papers written for publication and some 'higher class' newspapers and journals.  It may include many specialized terms for use in special fields such as medicine.  Many works of fiction include items from this register, though they need not necessarily.
Register 2 is the focus point for most conversation by educated people.  It is used in the market place, and when speaking to strangers, as well as when speaking with friends.  It includes many frequently used informal expressions.  Most teaching of language concentrates on register 2, with excursions into register 1 and, more often, into register 3.
Register 1 consists of many more informal expressions and inoffensive slang. 
Register 0 consists of vulgar expressions which should be avoided.

CJ

Yes, it's class, style, rank, order.

The meaning of register here is similar to the meaning of register in music.  To sing in a high register; to sing in a low register.  To learn the registers of each instrument for the purpose of orchestrating music.

The analogy here is fairly obvious.  To speak in a high register; to speak in a low register (from the viewpoint of vocabulary, not the pitch of the voice, of course).  To learn the registers of a language for the purpose of choosing words appropriate to the occasion.

CJ