Drawers to open and close

Hi i am newb at Unity scripting and i tried getting door open scripts working on a chest of drawers which has 3 drawers. I made an animation to open /close on timeline and I tried this script. I attached this script to MT gameobject, the game object itself and even the camera..Why does'nt it work. HELP!!

 private var doorIsOpen : boolean = false;
 var door : GameObject;
 function OnTriggerEnter(collision : Collider) 
 { 
     if ((collision.gameObject.tag =="DrawerAss1") && (doorIsOpen = false))
     {
         door.animation.Play("OpenDrawer"); 
         doorIsOpen = true;
     }
 }
 
 function OnTriggerExit(collision : Collider)
 {
     if ((collision.gameObject.tag == "DrawerAss1") && (doorIsOpen = true))
     {
         door.animation("CloseDrawer").speed = -1.0;
         doorIsOpen = false; 
     }  
 }

I even tried this from Unity script ref

 //Plays an animation only if we are not playing it already.
 function OnMouseEnter() {
     if (!animation.isPlaying)
         animation.Play();

nada...