Animation on main camera

Hi there,

I am pretty new to Unity so I have no idea if this is possible and if so, how can be done, but I have a script on my main camera, so the background resize depending on the device where it is played, then I have manually attached the background texture to this (it is a new component in the inspector of the main camera) and I have an animation based on the background, but I do not know how to make it play.

I mean: if I have the .jpeg as a hierarchy game object and I click on play with nothing else, the animation will play but the images are not going to resize. But, if I add the script to the main camera and I add the jpeg as my BG texture, the pic will resize but the anim won´t play.

Is there anyway to make both?

(here is the script I have:

using UnityEngine;
using System.Collections;

public class Presentation : MonoBehaviour {

public Texture msTexture;

void OnGUI(){
GUI.DrawTexture (new Rect (0, 0, Screen.width, Screen.height), msTexture);
}
}

Thanks!!!