> <http://www.cajaduero.es>
> 
> I just copy some files, but I can not view the pages
> off-line.

You can not view the pages off-line. What does that mean? It could mean
anything from you don't know how to open the mirror to the mirror doesn't show
anything.  No mind readers here.

Some links on the pages will not work in the mirror.
href="..." title="..." onclick="abreLD();return false" 
Httrack has no idea what to do with the onclick.
Those pages will have to be opened manually.