Ity appears the browser doesn't see the 'update' command and doesn't load the updated p[age.
Another reason I use Opera is in the address bar (or wher ever you put it) it tells you what;s happening. Sending data to..... or receiving data from....... etc.

I validate the home page and it returned:
"Failed validation, 363 errors", "This page is not Valid (no Doctype found)!"

See for yourself;
http://validator.w3.org/
and,
[Link: htmlhelp.com]