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- !function(e,o,n,t){"use strict";o=void 0!==o&&o.Math==Math?o:"undefined"!=typeof self&&self.Math==Math?self:Function("return this")(),e.fn.visibility=function(i){var s,c=e(this),r=c.selector||"",a=(new Date).getTime(),l=[],d=arguments[0],u="string"==typeof d,f=[].slice.call(arguments,1),b=c.length,g=0;return c.each(function(){var 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