Does anyone know how to use httrack to mirror familysearch records pages
please? 

They seem to open up within a frame to show index images and when you click
these they open a full image.  On standard httrack arguments the download does
not even start.  

for example this page (you need a free login to access which I have entered
into httrack).  

<https://www.familysearch.org/search/film/008223331?cat=702378>

Could someone help with agruments to download this page? Or is it not possible
to mirror this type of website?