looking for a script calculates

there is a script in this address that does what i need where can i find something like it?

http://www.fences4less.com/chainlink.html

Write one yourself???

*SURELY* this is such a specialized problem that nobody is going to have any script just sitting out there for you to copy. If the people who own that site aren't your rivals--if they are in a different market--maybe you could buy the script from them?

Write one yourself???


Or - Shock! Horror! - pay a professional to make your commercial website for you.