security to email contact form, how???

[CircleOfLinks]

Hey guys.

I need help adding a security code to my email contact page. I've had the conact us form active for 3-4 days now and ive been recieving 'junk' so I want to add the security code where uses type in the code in the contact form.

I'm not very experianced in coding and they person who normally does it wont be back for about another week or so, so if there is a simple way of implementing it on the site i would really appreciate it.

The current contact page can be seen at here and i just want to add the security code on there towards the bottom of the form, so if possible please send me the code or tell me where i can get it from.

thanks heaps in advanced.