Don't keep creating graphics if we already have one; just reuse the existing object and tweak the symbol.
Don't keep creating graphics if we already have one; just reuse the existing object and tweak the symbol.

MIT-Mobile/MIT-Mobile-for-iOS,MIT-Mobile/MIT-Mobile-for-iOS,xNUTs/MIT-Mobile-for-iOS,xNUTs/MIT-Mobile-for-iOS,smartcop/MIT-Mobile-for-iOS,smartcop/MIT-Mobile-for-iOS