Opening a url in new window using a button after running a process

Question

I need the folowing to happen:
When a button is clicked, a process runs - updates a table in the DB. then a URL opens in a new window.
I created the process and related it to the button - click of the button makes it work.
If I write in the button properties the URL - optional URL redirect:
javascript:popupURL( 'http://www.mysite.com');
the process does not run. url opens in new window.
If I create a branch - writing there javascript:popupURL( 'http://www.mysite.com'); the process works but URL does not open. only writing http://www.mysite.com works - but it does not open a new window.
The question is: how can I click on a button, make a process run and URL opens in a new window?

Answer 1

If you post your page, then the browser must go some place. You can post your page (say page 1), you can then branch to page 2, then the js on page 2 can open a new window. Once you post your page you must goto another page before you can open a new window.
Perhaps what you want is to press a button on a page and have it do work without posting the page, e.g. make an AJAX request, and then based on that work popup some corresponding page.