Daily Mail- When you apply for a job as a skyscraper window cleaner, a head for heights is essential. But you probably don’t anticipate being repeatedly slammed into the side of the building as your platform is thrown around like a toy in the wind. Such was the fate of two window cleaners working at a skyscraper in Shanghai recently, People’s Daily Online reported, with their ordeal filmed from inside the building by an onlooker. The incident occurred at the 91st floor of the 101-storey Shanghai World Financial Centre, the city’s second-tallest building at 492 metres (1,614ft). The one-minute video shows the platform swing violently in wind with the Lujiazui Financial District hundreds of metres below.