Romantic comedy "Ajab Prem Ki Ghazab Kahani", which stars Ranbir Kapoor and Katrina Kaif, has sent the box office cash registers ringing, elbowing out Madhur Bhandarkar's "Jail" on the first day Friday.

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"'Ajab Prem Ki...' has got a terrific initial thanks to the star cast but it will suffer on the content part. While 'Jail' has had a very slow opening...that of only around 20 percent. Shelf life for both movies is only limited till Monday," Joginder Mahajan, a Delhi-based distributor told IANS.

Directed by Rajkumar Santoshi and produced by Ramesh S. Taurani, "Ajab Prem Ki..." also has superstar Salman Khan in a special appearance.