Javascript + Html form

[foxsan48]

I need something along the lines of someone clicks a link on my site to a page with a form, and depending what link to that page they pressed, some content on the form is auto filled in for them, is this possible? and if so how
Thank you in advance
(double post but i couldnt find my old one on Html forum" to delete it)

EDIT: Please delete this thread, i thought i put the last one on the wrong board