hSliderValue = GUI.HorizontalSlider (Rect (25, 25, 100, 30), hSliderValue, 0.0, 10.0);

var explosionPrefab : Transform;

function OnCollisionEnter(collision : Collision) {

var contact = collision.contacts[0];
var rot = Quaternion.FromToRotation(Vector3.up, contact.normal);
var pos = contact.point;
if (collision.gameObject.tag == "Snar") {
Instantiate(explosionPrefab, pos, rot);
Destroy (gameObject);

}
}