[Erlyaws-list] changing url/page name on yssi return

[Jon H. <ke...@ma...>]

I have a post.yaws file which is called from a form on index.yaws.   
post.yaws does some work and then returns with
[{bindings, [{"Post_message", Post_message}]}, {yssi, "index.yaws"}].

All works well except my browser url field shows the mywebsite.com/ 
post.yaws file when index.yaws is returned.
What I want is to set the url in the return and also the browser  
title bar as well is possible.
I assume this is a matter of knowing the correct header info to set,  
but I don't know it ;-).

Any ideas?
thanks, ke han