Snap to grid after click and drag?

I'm using two scripts from the Unify Community wiki - one is to drag and drop objects, and the other snaps objects to a grid. Is there a way I can connect the variables of these scripts so that when you release the mouse, the object you've been dragging snaps to the grid?

DragObject script:

 var normalCollisionCount = 1;
 var moveLimit = .5;
 var collisionMoveFactor = .01;
 var addHeightWhenClicked = 0.0;
 var freezeRotationOnDrag = true;
 var cam : Camera;
 private var myRigidbody : Rigidbody;
 private var myTransform : Transform;
 private var canMove = false;
 private var yPos : float;
 private var gravitySetting : boolean;
 private var freezeRotationSetting : boolean;
 private var sqrMoveLimit : float;
 private var collisionCount = 0;
 private var camTransform : Transform;
 
 function Start () {
     myRigidbody = rigidbody;
     myTransform = transform;
     if (!cam) {
         cam = Camera.main;
     }
     if (!cam) {
         Debug.LogError("Can't find camera tagged MainCamera");
         return;
     }
     camTransform = cam.transform;
     sqrMoveLimit = moveLimit * moveLimit;   // Since we're using sqrMagnitude, which is faster than magnitude
 }
 
 function OnMouseDown () {
     canMove = true;
     myTransform.Translate(Vector3.up*addHeightWhenClicked);
     gravitySetting = myRigidbody.useGravity;
     freezeRotationSetting = myRigidbody.freezeRotation;
     myRigidbody.useGravity = false;
     myRigidbody.freezeRotation = freezeRotationOnDrag;
     yPos = myTransform.position.y;
 }
 
 function OnMouseUp () {
     canMove = false;
     myRigidbody.useGravity = gravitySetting;
     myRigidbody.freezeRotation = freezeRotationSetting;
     if (!myRigidbody.useGravity) {
         myTransform.position.y = yPos-addHeightWhenClicked;
     }
 }
 
 function OnCollisionEnter () {
     collisionCount++;
 }
 
 function OnCollisionExit () {
     collisionCount--;
 }
 
 function FixedUpdate () {
     if (!canMove) return;
    
     myRigidbody.velocity = Vector3.zero;
     myRigidbody.angularVelocity = Vector3.zero;
     myTransform.position.y = yPos;
     var mousePos = Input.mousePosition;
     var move = cam.ScreenToWorldPoint(Vector3(mousePos.x, mousePos.y, camTransform.position.y - myTransform.position.y)) - myTransform.position;
     move.y = 0.0;
     if (collisionCount > normalCollisionCount) {
         move = move.normalized*collisionMoveFactor;
     }
     else if (move.sqrMagnitude > sqrMoveLimit) {
         move = move.normalized*moveLimit;
     }
    
     myRigidbody.MovePosition(myRigidbody.position + move);
 }
 
 @script RequireComponent(Rigidbody)

SnapToGrid script:

 @MenuItem ("GameObject/Snap to Grid %g")
 static function MenuSnapToGrid()
 {
     var transforms : Transform[] = Selection.GetTransforms(SelectionMode.TopLevel | SelectionMode.OnlyUserModifiable);
 
     var gridx : float = 1.0;
     var gridy : float = 1.0;
     var gridz : float = 1.0;
 
     for (var transform : Transform in transforms)
     {
         var newPosition : Vector3 = transform.position;
         newPosition.x = Mathf.Round(newPosition.x / gridx) * gridx;
         newPosition.y = Mathf.Round(newPosition.y / gridy) * gridy;
         newPosition.z = Mathf.Round(newPosition.z / gridz) * gridz;
         transform.position = newPosition;
     }
 }