[squid-users] Help with problem site

Everyone,

I am having some difficulty between squid and a specific website. The
website is http://chem.sis.nlm.nih.gov/chemidplus. When my users try to access this site and search for a chemical using
our squid proxy server, the results are totally random and the site does
not work properly. However, if they directly access the site w/o using
squid, the site works properly. I've tried several things, but nothing
seems to work. Can someone please help me get this site to work correctly
through the squid proxy? Having the users directly access the site is not
a viable option since my company is working on having everyone use the
proxy server for internet access.

I'm attaching my squid.conf.

Thanks,

Chris