> I am trying to mirror a website which has several 
> javascript actions like 'popupwin' that, specifically, 
> opens full-size images of thumbnails in a pop-up window.
> However, it looks like HTTrack does not get these.
> Is there a way around this, to convert these javascript 
> into permanent links?
If httrack couldn't detect them this is bad news, because 
the code may be too complex, such as:
foo.open(bar+'.htm', title);

Look at the modified javascript code to see if it has been 
touched by httrack (replaced into http:// absolute links)
If not, either httrack did not detect it, or could not 
capture the page.