Some users are still having problems with the pop-up login. I think they are actually getting 403s because of the CSRF protection. So I have modified the base template to always have a javascript variable called csrf_token available when they aren't logged in. The ajax_login.js script was then modified to send this value with the ajax post. Fingers crossed.

.markItUp {
   width: 600px;
}
.markItUpEditor {
	width:543px;
	height:200px;
}