Mary-Sarah Dean, Emily Walsh and Emily Frew, dressed as angels, wait for their cue during a traditional Christmas Nativity, Dec. 18, 2011, at St Mary's Church, Myton Village, England. In schools and churches around the country children busy preparing and performing in the telling of the traditional nativity story. (Bethany Clarke/Getty Images)

Kashmiri government teachers shout slogans during a protest in Srinagar, India, Dec. 20, 2011. Police in Indian-controlled Kashmir on Tuesday detained dozens of government teachers who took out a protest demanding hike in salary and regularization of their jobs. (Dar Yasin/AP Photo)

Rabbis Yehuda Teichtal (L) and Schmuel Segal pray as they erect a large nine-armed candleholder, a Hannoukiah, or Menorah, ahead of the start of the eight-day-long and annual Jewish Festival of Lights known as Chanukah, in front of the Brandenburg Gate on Dec. 20, 2011 in Berlin, Germany. (Adam Berry/Getty Images)

Shoppers are reflected in a building in Chicago's famed Loop Monday, Dec. 19, 2011. (Charles Rex Arbogast/AP Photo)

Members of Chapel Royal Choirboys choir attempt to skate during a photocall at the Hampton Court Ice Rink, Dec. 19, 2011 in London, England. The event was aimed at highlighting a new charity, 'The Choral Foundation', which is hoping to raise 1.5M GBP to fund choir led music lessons for the choristers and the refurbishment of the historic organ in the Chapel. (Dan Kitwood/Getty Images)

Southbound traffic on I-25 leaves Santa Fe, N.M. in a single file as snow accumulates on the road, Dec. 19, 2011 as a winter storm hit the area. New Mexico state police say a winter storm is shutting highways and causing difficult driving across northern New Mexico. (Dean Hanson/Albuquerque Journal/AP)

A Filipino woman looks forward as others raise their gifts during an attempt to break a Guinness world record for the biggest, simultaneous exchange of gifts, or kris kringle, in Manila, Philippines, Dec. 18, 2011. (Aaron Favila/AP Photo)

British Prime Minister David Cameron meets with British soldiers in the NAAFI at Kandahar airfield Dec. 20, 2011 in Kandahar, Afghanistan. David Cameron has visited Afghanistan on an unannounced visit ahead of Christmas to meet with troops currently in combat operations in the country. (Jeff J Mitchell/Getty Images)

A Dutch postal worker moves a trolly in the mail sorting center of Netherlands Post main office in Amsterdam, Dec. 20, 2011. With the Christmas in full swing Netherlands Post main expects today to be the busiest of the year. (Lex Van Lieshout/AFP/Getty Images)