I'm trying to add a button in my newsletters. The little box that has the options of things to add to your newsletter, (button, links, etc.) keeps moving down the page when I want to use it. I click on the "+" to open it, and it kicks that box farther down the page. Then, once I get the button into my newsletter, the box that pops up to edit the button won't let me click on it...it just kicks farther down the page when I click anywhere in it. Any idea what's going on? I'm using Safari as my browser, if that makes a difference.