Revelers dance to the music played by DJ Afrojack inside the XS 

Revelers dance to the music played by DJ Afrojack inside the XS nightclub in Las Vegas on Sunday, Jan. 20, 2013. (AP Photo/Julie Jacobson)
Associated Press
Revelers dance to the music played by DJ Afrojack inside the XS nightclub in Las Vegas on Sunday, Jan. 20, 2013. (AP Photo/Julie Jacobson)
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