Until all browsers support the onhashchange event what is the best workaround for this?
Is there something for this in jQuery? or as a plug-in?
If you're looking for an iframe cross domain solution this seems to be the most robust out there:
http://easyxdm.net/wp/
http://www.cakemail.com/the-iframe-cross-domain-policy-problem/
I haven't tried it though and it seems like it could be a bit difficult to implement and might not work in all situations.