After playing around with the popup feature in TW4 pro I am left wonding to what extent I can use this new and wonderful tool be used.  I have seen several post on using various complex javascripts and now find myself wonding if I can use the popup feature to put in a mortgage calculator or a form or a slide show...as I recall the execute script function doesn't support complex code is this still the case, has anyone out there in forum world tried or achieved some of the features I am hoping for? 

Here is the code I use to pop-up Umapper and a slide show. It was provided by "Nerjaace".

newwindow=window.open("http://www.yoururl.com",'popupwindow',
  'width=640,height=360,left=380,top=200');

You have to play with the numbers to get the size and location you want and of course put in your own URL.
Hope this helps, have fun. Here is a tour I just did with a map from Umapper (thanks Smooth) and also has photos/slide show.