GetURL without browser opens a (new) window

(sorry for my poor English),

I have a small problem.
I want to send data to a server to generate an e-card > like :

http://www.theserver.com/ecard.cfm?from="+sender+"&to="+receiver+"&message="+text+"&language=ENG&picture=pic_"+currentpic+".jpg"

It works fine with : getURL(“http://www.theserver.com/ecard.cfm?from="+sender+"&to="+receiver+"&message="+text+"&language=ENG&picture=pic_"+currentpic+".jpg","POST”) but the URL appears in a (new) browser window and that’s not what I want …

I want to send the data without any reaction of the browser …

THX