What browser are you using? I am using firefox and it is working fine. Sometimes browsers go a bit crazy on sites especially if the site has made a change recently or the browser software has been updated recently.
If it has worked in the past, I say just restart your browser or try a different browser (firefox is free to download)... if the page looks different than you remembered it, but is still the McMurray page with all the fixin's of birds and stuff for sale, then they probably have changed it a bit since you were last there. I can get to all the menus and links it has listed. *shrug*
Good luck.