I've googled and googled and I'm googled out on this one.
I want to be able to allow a user to switch off/on a background image and this state to be remembered so that what ever link they click the parameter will be passed. I can then check it in the header and do what ever needs doing.
I know a fair bit of php but struggling with WP since I cannot encode every link with the variable so it needs to be hooked or filtered in some way I cannot work out.
I don't want to use cookies and I don't want to use a bloated theme switcher - I just need to toggle a background image.
If theres an easier way to do this I'm all ears.
Anyone got any ideas?