How to enable/disable image effect through C# in Unity 5

I am not a programmer. Just trying to use a underwater script that I found and it works for fog but the enabling blur part throws errors. Hovering over gives this:

error CS0103: The name ‘Blur’ does not exist in the current context

It does did with any underwater script not just this. I have tried different names/components and it still says the same error. I know the get component has changed in 5 and am not sure how to edit the script for this to work.

Thank you for any help.

You need to reference the image effects namespace in Unity 5:

using UnityStandardAssets.ImageEffects;