last 4 digits of cc are visible to customer
can set quantity from product page
cart hidden when empty
differential pricing for xxl & xxxl

note that this code depends on the spellings:
men's xx-large
men's xxx-large
body styles page uses blank images
hid help & search
improved product purchase validation script
merged new styles - not totally successful though
moved add to cart button works via listener
removed unneeded js code after markup reorganized on product detail page