var lineMaterial : Material;
  
  function Start()
  { 
          line = this.gameObject.AddComponent(LineRenderer); 
          line.SetWidth(.5, .5); 
          line.SetVertexCount(2); 
          // line.useWorldSpace = true; 
          line.material = lineMaterial; 
          line.SetColors(Color(1,0,0,1), Color(1,0,0,1)); 
          //line.renderer.enabled = false; 
          //the line is later enabled 
  }