High School Musical 3: Senior Year has claimed its second week at the top of the U.S. box office chart, raking in an additional $15 million.The Disney movie, which stars Zac Efron, Vanessa Hudgens and Ashley Tisdale, set a new record last weekend (beg25Oct08) for a musical after trumping the $27.8 million Mamma Mia! opened with in July (08).The musical beat Seth Rogen comedy Zack and Miri Make a Porno, which took in $10.7 million (GBP6.6 million) to debut at two.Horror flick Saw V dropped one spot to number three in its second week of release, with $10.1 million.Soaring to the fourth spot is Angelina Jolie's new film Changeling, which made the jump from its debut at 20 last week (24Oct08), taking in $9.4 million and is a string contender for Oscars come awards sewason.Meanwhile science fiction film The Haunting of Molly Hartley - starring Gossip Girl actor Chace Crawford - took in $6 million for its debut to round out the top five. 1. High School Musical 3: Senior Year - $15 million

2. Zack and Miri Make a Porno - $10.7 million

3. Saw V - $10.1 million

4. Changeling - $9.41 million

5. The Haunting of Molly Hartley - $6.01 million

6. Beverly Hills Chihuahua - $4.75 million

7. The Secret Life of Bees - $4 million

8. Max Payne - $3.7 million

9.Eagle Eye - $3.4 million

10. Pride and Glory - $3.26 million

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