The next problem arises:
The menu on the left uses a lot of javascript to generate
menu-entries:
insDoc(_A000000274, gLnk(0, "<font class=TreeLeaveOn>Decors
n.1</font>", "RicercaPage.asp" + qrystr +
"&CodPagina=B000001594&type=0"),iLeafOK);
HtTrack can not follow links like these because it does not
have a javascript-parser built-in - so unfortunately this
website can not be mirrored with HtTrack (or any other
web-crawler that I know of)