Blog template overlay frozen

Hi, i've just logged into front end for first time, to write a blog. I clicked the login on the toolbar. Logged in ok.

Then the "Select a template to begin writing post" pop=up screen comes up, but if i click a templae, it gives a blue tick, but does nothing, just stays there ... there are no buttons for "ok" or if i double click nothing happens, screen just stuck.
http://www.lakesentrance.com/events

I've removed all templates except for "blank post"

Can you please help