To help you build the menu with the link to the different blogs, please find below the URLs:

http://blogs.cdl.ch/alexsolyatcdl/
http://blogs.cdl.ch/joshuaatcdl/
http://blogs.cdl.ch/justinatcdl/
http://blogs.cdl.ch/sebastianatcdl/
http://blogs.cdl.ch/tsothleatcdl/
http://blogs.cdl.ch/yasamanatcdl/

You can look on the top right of this blog for a menu example with drop downs.