x-cart version 4.6.6., 'one Page checkout' integration of SAGE server iFrame solution
The iFrame should load in x-cart's one-page-checkout process after hitting the order submit button as a pop-up (greying out the rest of the page). In other words: [url removed, login to view] should be called into this pop up window. After processing the payment the result screen is to be shown in full page of the browser (as usual).
This is a 1 hour job for someone with experience in x-cart matters.
I just do not know how to call the [url removed, login to view] into the pop up window at chackout after hitting 'submit' - it remains empty in my trials.