The film about a panda in ancient China who becomes an unlikely martial-arts hero is expected to sell US$60 million worth of tickets in the United States and Canadian theaters over the three-day period, Los Angeles-based box office tracking firm Media By Numbers said.

"Kung Fu Panda" features the voices of Hollywood A-list stars Jack Black, Dustin Hoffman, Angelina Jolie as well as Chinese action star Jackie Chan and American-born Chinese actress Lucy Liu.

Sony Pictures' Adam Sandler comedy "You Don't Mess With The Zohan," in which the comedian plays an Israeli commando-turned-New York hairdresser, debuted in the number two spot with estimated 40million dollars over the weekend.

Last week's box office leader "Sex And The City" slipped to No.4 with about US$21.3 million, a massive 63 percent drop for the big-screen adaptation of the popular HBO TV series from its surprisingly strong opening. It has grossed nearly US$100 million since its release two weeks ago.

Meanwhile, "Indiana Jones and The Kingdom of the Crystal Skull" seems to have strong legs than "Sex And The City." The Harrison Ford action-adventure is on track to sell US$22.8 million this weekend, for a whopping US$253 million over three weeks of release.