Neil,
The redirection is what I saw last night on my iPhone. If that’s not something that you set up, it sounds like you may have been hacked. I didn’t see anything on my Mac in your source code so the redirection is being added only when viewed on a mobile device.
It could be placed inside a plugin. You could try disabling all your plugins and see if the redirection is still there. If it isn’t, then turn them back on, one by one until you find the problem.
If it’s not a plugin, then is possible it was added to a file in the root of your WordPress installation called .htaccess. This file controls your server’s behavior and can do redirections. You can access it with your web host’s control panel or a FTP program.
The hackers could have made changes to your theme. Try installing the TwentyTwelve theme (it will be the new default theme in WordPress 3.5) and see if the redirection is still there. If it isn’t, then delete Progress and reinstall it. That will restore the files to their original state and remove the hack.
I ran a quick malware scan of your site (http://sitecheck.sucuri.net/results/www.changeyourworld.com.my/) and the results indicated that there is a redirection hack in your htaccess file. More than likely, you can just delete that file from your WordPress installation. You’ll have to reset your permalinks, but removing the file should take care of it. You’ll also want to change your WordPress and web hosts passwords to help ensure it doesn’t happen again.
If I can help, let me know,
Bill