I'm going to assume your host is using C-Panel - and that it's probably HostGator or GoDaddy. In both cases they use C-Panel (in fact, a lot of hosts do) to make the Server administration as easy as possible on you, the end user. Even if you are hosting through someone else - see if you can log in to some kind of admin panel and find an .htaccess file that you can edit. (Note: The period before just means that it's a "hidden" file/directory).
Once you find the htaccess file add the following line:
Header set Access-Control-Allow-Origin "*"
Just to see if it works.
Warning: Do not use this line on a production serverIt should work. If not, call your host and ask them why the line isn't working - they'll probably be able to help you quickly from there.
*
to the address of the requesting domain http://cyclistinsuranceaustralia.com.au/
. You may find an issue with canonical addressing (including the www) and if so you may need to configure your host for a redirect. That's a different and smaller bridge to cross though. You'll at least be in the right place.