@IBAction func dialogButton(sender: AnyObject) {
    let optionMenu = UIAlertController(title: "Choose Your Option", message: nil, preferredStyle: UIAlertControllerStyle.ActionSheet)

       let option1 = UIAlertAction(title: "OptionTest1", style: .Default, handler: {

           (alert: UIAlertAction!) -> Void in
           println("Option 1")
       })

       let option2 = UIAlertAction(title: "OptionTest2", style: .Default, handler: {

           (alert: UIAlertAction!) -> Void in
           println("Option 2")
       })

       let cancelAction = UIAlertAction(title: "Cancel", style: .Cancel, handler: {
           (alert: UIAlertAction!) -> Void in
           println("Cancelled")
       })

       optionMenu.addAction(option1)
       optionMenu.addAction(option2)
       optionMenu.addAction(cancelAction)


       if ( UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiom.Pad )
       {
           if let currentPopoverpresentioncontroller = optionMenu.popoverPresentationController{
               currentPopoverpresentioncontroller.sourceView = btn_button
               currentPopoverpresentioncontroller.sourceRect = btn_button.bounds;
               currentPopoverpresentioncontroller.permittedArrowDirections = UIPopoverArrowDirection.Up;
               self.presentViewController(optionMenu, animated: true, completion: nil)
           }
       }else{
           self.presentViewController(optionMenu, animated: true, completion: nil)
       }
}