#pragma strict
var tex1:Texture;
var tex2:Texture;
var mytimer:int=0;

function Update () {
mytimer=mytimer+1;

if (mytimer>120) {transform.renderer.material.mainTexture=tex1;}
else {transform.renderer.material.mainTexture=tex2;}

if (mytimer>240) {mytimer=0;}
}

#pragma strict
var tex1:Texture;
var tex2:Texture;

function Start () {

}

function Update () {
if (transform.position.y>2) {transform.renderer.material.mainTexture=tex1;}
else {transform.renderer.material.mainTexture=tex2;}
}

if (this.hitTest(enemy)) {
     trace("you hit!");
     }