Can't login to gui after reinstalling asterisk

I’ve reinstalled asterisk and asterisk-gui this mourning. Now when I navigate to … basic.html all both edit fields and buttons are disabled. So I can’t login.
Please help me resolve this. I’m using firefox 2.0 on Kubuntu Edgy to access gui. The OS where asterisk is installed is CentOS 4.4

These were my steps to reinstall asterisk:

rm -rf /usr/sbin/asterisk /usr/sbin/safe_asterisk /var/log/asterisk /var/spool/asterisk /usr/include/asterisk /usr/lib/asterisk /var/run/asterisk /etc/asterisk
svn checkout asterisk
svn checkout asterisk-gui
cd asterisk; ./configure && make && make install && make samples
cd …/asterisk-gui ; ./configure && make && make install && make samples
vi /etc/asterisk/manager.conf (below are the lines edited)
enabled = yes
webenabled = yes
secret = admin
read = system,call,log,verbose,command,agent,user,config
write = system,call,log,verbose,command,agent,user,config

vi /etc/asterisk/http.conf (below are the lines edited)

#asterisk -cvvvvvvvv

did you set a permit ip address? thats what worked for me.