Animation problem (noob)

Hey guys ;)

I wanna do simple animations (walk, run, jump).

I think that the script part is correct, but once I saved the script, I have an error:

Assets/Standard Assets/Scripts/Camera Scripts/Movecharacter.js(51,42): BCE0019: 'animation' is not a member of 'Object'.

Here is the script:

 #pragma strict
     
     var speed:float;
     var speedRun:float;
     var speedRotate:float;
     var gravity:float;
     var jumpspeed:float;
     
     private var controller:CharacterController;
     private var moveDirection:Vector3;
     private var deltaTime:float;
     private var characterContent;
     private var runAnim:boolean;
     private var run:boolean;
     
     
     function Start () {
         controller = GetComponent("CharacterController");
         characterContent = transform.Find("samuzai");
     }
     
     function Update () {
         
         deltaTime = Time.deltaTime;
         runAnim = false;
         
         if(controller.isGrounded){
     
             if(Input.GetKey(KeyCode.LeftShift)){
                 moveDirection = Vector3(0,0,Input.GetAxis("Vertical") * speedRun);
                 runAnim = true;
             }
             else{
                 moveDirection = Vector3(0,0,Input.GetAxis("Vertical") * speed);
             }
             
             if(Input.GetKey(KeyCode.UpArrow) || Input.GetKey(KeyCode.DownArrow)){    
                 if(!runAnim){
                     characterContent.animation.CrossFade("walk", 0.2);
                 }
                 else{
                     characterContent.animation.CrossFade("run", 0.2);
                 }
             }
             else{
                     characterContent.animation.CrossFade("idle", 0.2);
             }
             if(Input.GetKey(KeyCode.Space)){
             
                 moveDirection.y = jumpspeed;
                 characterContent.animation.CrossFade("jump", 0.2);
             
             }
         }
             
             
             moveDirection = transform.TransformDirection(moveDirection);
             
             transform.Rotate(Vector3(0,Input.GetAxis("Horizontal") * speedRotate * deltaTime,0));
             
             moveDirection.y -= gravity * deltaTime;
             
             controller.Move(moveDirection * deltaTime);
     }

   

Thanks :)