TinyMCE fix for leaving definition-lists with the enter key

gistfile1.js

setup : function(ed) {
      ed.onKeyPress.addToTop(function(ed, e) {
        if(e.keyIdentifier =='Enter' && ed.selection)
        {
          var element = ed.selection.getNode(),
              tagname = element.tagName.toLowerCase(),
              contentLength = element.textContent.length;
          if( contentLength==0 && (tagname=='dt' || tagname=='dd'))
          {
            ed.execCommand("formatBlock",false, 'p');
            e.stopPropagation();
            e.preventDefault();
            return false;
          }
        }
      });
    },