I managed to find your page (looks good). As it's an html page, I was able to duplicate the page on my machine, but can't find out what the problem would be.
See Attached images.
I'm at a loss to think why you are unable to get to those buttons. Make sure that you are not using 'Live Preview' while trying th edit.
What OS and version are you using, what version of DreamWeaver or other software are you using? Are you editing the page in a defined site in Dreamweaver?
Perhaps if you post those details, Jason will know immediately where the problem might be. Your code is fine. Perhaps you could try downloading the page from your live server to replace your local copy, as I know its OK, just in case your local copy has got corrupted somehow.
Sorry to have been useless in this case, - wasting your time - if I think of anything, I'll post back.