If statements to make fields visible or hidden

Based on how the user answers a question being asked in "this.rawValue" field, I want other fields to become visible.  I have this code and it worked until I added the last reference.  If the users answers "Rating" I need three fields to become visible otherwise hidden and I don't know how to state it properly.

if(this.rawValue=="RefExempt")

NPV.presence="visible"

else

NPV.presence="hidden"

if(this.rawValue=="DExempt")

Discount.presence="visible"

else

Discount.presence="hidden"

if(this.rawValue=="Rating")

Rated.presence="visible"

NotRated.presence="visible"

InvestCert.presence="visible"

else

Rated.presence="hidden"

NotRated.presence="hidden"

InvestCert.presence="hidden";