I'm hoping this is an easy one for anyone knowledgable with PHP.

I just need a simple script that will allow a user to click on a 'contact us for more info on this special offer' type link, pick up a parameter on a page to identify what that special offer is (a title tag maybe?) and carry that through to the contact form so that the user doesn't have to enter any info other than their own details etc.

If anyone can point me in the right direction I'd appreciate it, thanks!