         }
         if(segue.identifier! == "voidLessons" )
         {
-            
             for btn in tabBarButtons {
                 btn.backgroundColor = GlobalColors.lightBlueColor
             }

    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        
        if(segue.identifier! == "mainSegue" ) {
            
            for btn in tabBarButtons {
                btn.backgroundColor = GlobalColors.lightBlueColor
            }

                }
                segueSide = -1
                (weekNumberTab!) -= 1
                arrowPing(leftWeekArrow)
                self.updateScheduleProperties(selectedDay)
                weekLabel.text = "Неделя " + String(weekNumber) + ", \(day.date!)"
                if(self.day.lessons?.count != 0){
