   }
   
   public func fadeOutLeft(completion: AnimatableCompletion? = nil) {
-    let x = -300 * force
+    let x = -screenSize().width * force
     animateOutWithX(x, alpha: 0, completion: completion)
   }
   
   public func fadeOutRight(completion: AnimatableCompletion? = nil) {
-    let x = 300 * force
+    let x = screenSize().width * force
     animateOutWithX(x, alpha: 0, completion: completion)
   }
   
   public func fadeOutDown(completion: AnimatableCompletion? = nil) {
-    let y = 300 * force
+    let y = screenSize().height * force
     animateOutWithY(y, alpha: 0, completion: completion)
   }
   
   public func fadeOutUp(completion: AnimatableCompletion? = nil) {
-    let y = -300 * force
+    let y = -screenSize().height * force
     animateOutWithY(y, alpha: 0, completion: completion)
   }
 

  
  // MARK: - Animation methods
  public func slideInLeft(completion: AnimatableCompletion? = nil) {
    let x = -300 * force
    animateInWithX(x, completion: completion)
  }

  public func slideInRight(completion: AnimatableCompletion? = nil) {
    let x = 300 * force
    animateInWithX(x, completion: completion)
  }

  public func slideInDown(completion: AnimatableCompletion? = nil) {
    let y = -300 * force
    animateInWithY(y, completion: completion)
  }

  public func slideInUp(completion: AnimatableCompletion? = nil) {
    let y = 300 * force
    animateInWithY(y, completion: completion)
  }
  
  public func slideOutLeft(completion: AnimatableCompletion? = nil) {
    let x = -300 * force
    animateOutWithX(x, alpha: 1, completion: completion)
  }

  public func slideOutRight(completion: AnimatableCompletion? = nil) {
    let x = 300 * force
    animateOutWithX(x, alpha: 1, completion: completion)
  }
  
  public func slideOutDown(completion: AnimatableCompletion? = nil) {
    let y = 300 * force
    animateOutWithY(y, alpha: 1, completion: completion)
  }
  
  public func slideOutUp(completion: AnimatableCompletion? = nil) {
    let y = -300 * force
    animateOutWithY(y, alpha: 1, completion: completion)
  }
  
  public func squeezeInLeft(completion: AnimatableCompletion? = nil) {
    let x = -300 * force
    let scaleX = 3 * force
    animateInWithX(x, scaleX: scaleX, completion: completion)
  }
  
  public func squeezeInRight(completion: AnimatableCompletion? = nil) {
    let x = 300 * force
    let scaleX = 3 * force
    animateInWithX(x, scaleX: scaleX, completion: completion)
  }
  
  public func squeezeInDown(completion: AnimatableCompletion? = nil) {
    let y = -300 * force
    let scaleY = 3 * force
    animateInWithY(y, scaleY: scaleY, completion: completion)
  }
  
  public func squeezeInUp(completion: AnimatableCompletion? = nil) {
    let y = 300 * force
    let scaleY = 3 * force
    animateInWithY(y, scaleY: scaleY, completion: completion)
  }
  
  public func squeezeOutLeft(completion: AnimatableCompletion? = nil) {
    let x = -300 * force
    let scaleX = 3 * force
    animateOutWithX(x, scaleX: scaleX, alpha: 1, completion: completion)
  }
  
  public func squeezeOutRight(completion: AnimatableCompletion? = nil) {
    let x = 300 * force
    let scaleX = 3 * force
    animateOutWithX(x, scaleX: scaleX, alpha: 1, completion: completion)
  }
  
  public func squeezeOutDown(completion: AnimatableCompletion? = nil) {
    let y = 300 * force
    let scaleY = 3 * force
    animateOutWithY(y, scaleY: scaleY, alpha: 1, completion: completion)
  }
  
  public func squeezeOutUp(completion: AnimatableCompletion? = nil) {
    let y = -300 * force
    let scaleY = 3 * force
    animateOutWithY(y, scaleY: scaleY, alpha: 1, completion: completion)
  }

  }

  public func squeezeFadeOutLeft(completion: AnimatableCompletion? = nil) {
    let x = -screenSize().width * force
    let scaleX = 3 * force
    animateOutWithX(x, scaleX: scaleX, alpha: 0, completion: completion)
  }

  public func squeezeFadeOutRight(completion: AnimatableCompletion? = nil) {
    let x = screenSize().width * force
    let scaleX = 3 * force
    animateOutWithX(x, scaleX: scaleX, alpha: 0, completion: completion)
  }
  
  public func squeezeFadeOutDown(completion: AnimatableCompletion? = nil) {
    let y = screenSize().height * force
    let scaleY = 3 * force
    animateOutWithY(y, scaleY: scaleY, alpha: 0, completion: completion)
  }
  
  public func squeezeFadeOutUp(completion: AnimatableCompletion? = nil) {
    let y = -screenSize().height * force
    let scaleY = 3 * force
    animateOutWithY(y, scaleY: scaleY, alpha: 0, completion: completion)
  }
