The easiest way to download/mirror a complete website is using WGET and use the mirror option. If you want to see your website with the correct layout and all images, make sure you also supply the --page-requisites flag.
The full command:
wget -p -m -k -K -E http://your.website.com/
See wget --help for an explanation of all command-line options, but these should give you a good start.
Delft University of Technology
Delft Bioinformatics Lab
Van Mourik Broekmanweg 6 (building 28)
2628 XE Delft
The Netherlands
http://bioinformatics.tudelft.nl/
Broad Institute of MIT and Harvard
Genome Sequencing and Analysis Program
7 Cambridge Center
Cambridge, MA, 02142
USA
http://www.broadinstitute.org