To curb courtroom corruption, install CCTV cameras for video & audio recording all courtroom proceedings. Immediately broadcast and upload the proceedings on internet for public viewing -- just like Rajya Sabha TV etc. Justice
Recorded proceedings would curb judges arbitrary behaviours, and help to nail petitioners and lawyers who lie and mislead the court. It would provide valuable material for a judicial oversight committee to analyze, such as the presence of touts and middlemen.
This is quite cheap and should be implemented immediately.