Load form in iframe without header

Load form in iframe without header

I am trying to load a form into an iframe without the header, but I am not having any luck. I am using openUrl() to load the iframe with the form URL and zc_Header set to false, e.g. #Form:Add_Case?zc_Header=false but it is still loading the header. Any tips? What I am trying to accomplish is a page sidebar for navigation that loads different forms/reports into the window