Bangkok, June 8 (IANS) The Shah Rukh Khan starrer Om Shanti Om swept a number of technical awards at the International Indian Film Awards (IIFA) 2008 gala here Sunday night.The film garnered awards for best special effects (Red Chillies Entertainment), best art direction (Sabu Cyril), best comstume design (Manish Malhotra, Karan Johar and Sanjeev Mulchandani) and best makeup.

Mani Ratnam's "Guru" won the awards for best background score (A.R. Rahman) and best song recording (H. Sridhar).

The award for best screenplay was won jointly by Anurag Basu ("Life in a Metro") and Jaideep Sahni ("Chak De! India").

"Chak De! India" also took home the trophy for best cinematography.

Imtiyaz Ali was named the best dialogue writer for Jab We Met.