Cancel, OK, yes, no?

[Mictlantecuhtli]

These aren't really clear answers to these questions:

Does clicking "Cancel" cancel the whole message or is it "no" ?

Ok, the latter is clearer than the first one, but still not very good. Better for both would be "yes" and "no" options. Or is this JavaScript limited?

 

[RealBlackStuff]

From my experience, the Cancel for message receipt means "No".
Have not tried the other one, why would I?

I assume this a standard JS script with a variable question-text (or just lazy/lousy programming).