honeylink case 7 does not hide

The module provides a honeypot link for spam bots. This link is sometimes showing on the bottom (footer) of the page. The module uses at random different methods to place this hidden link, but one method does not seem to be hidden on most browsers. It is case 7 using style="height: 0px; width: 0px. I changed

switch (mt_rand(0, 7)) 
to 
switch (mt_rand(0, 6))

to quickly fix this. Case 7 should be taken off from the module code.