To connect to your ftp server using your browser, you will need to use the following format:
ftp://user:pass@x.x.x.x/ (using the ip) or
ftp://user(ftp user):pass(ftp password)@ftp.yourdomain.com/(using the domain name - make sure to use ftp.domainname.com) or
ftp://user@x.x.x.x/(using the ip), then it will ask for your password