Shipping question [how to disable unavailable types]

[Aapo]

We use three different shipping types:

 

1. Courier (available for all orders)

2. Small Package (available only if total weight is <2)

3. Letter (available only if total weight is <0.5)

 

I made three different shipping types (default table rates) and these are working fine, but how to disable shipping types because these cannot be available because of weight.

 

It's not good for customers to see shipping types which are not available (because their orders weight is too much), so please can you help me how to disable 'unavailable' shipping types.

 

So, when order weight is 1.0 customer can make choice only between shipping types 1 and 2. If weight is 2.2 customer sees only shipping type 1.

 

Please help me..