Sending variables to CFMX in a Popup

I want to be able to send form variables to a .cfm but I want the .cfm page to be a javascript controlled(size, no scroll, etc) popup.

getURL(“search.cfm”, “_blank”, “POST”);

works

getURL(“javascript:Launch(‘search.cfm’)”, “”, “POST”);

(with all the javascript in the html page of course) does not seem to send my variables. I get the popup perfectly, but no variables are sent.

Any ideas???