code: function (cssText) {
          var self = this, doc = self.doc, head, styleElm;
  
          // Prevent inline from loading the same styles twice
          if (self !== DOMUtils.DOM && doc === document) {
            var addedStyles = DOMUtils.DOM.addedStyles;
  
            addedStyles = addedStyles || [];
            if (addedStyles[cssText]) {
              return;
            }
  
            addedStyles[cssText] = true;
            DOMUtils.DOM.addedStyles = addedStyles;
          }
  
          // Create style element if needed
          styleElm = doc.getElementById('mceDefaultStyles');
          if (!styleElm) {
            styleElm = doc.createElement('style');
            styleElm.id = 'mceDefaultStyles';
            styleElm.type = 'text/css';
  
            head = doc.getElementsByTagName('head')[0];
            if (head.firstChild) {
              head.insertBefore(styleElm, head.firstChild);
            } else {
              head.appendChild(styleElm);
            }
          }
  
          // Append style data to old or new style element
          if (styleElm.styleSheet) {
            styleElm.styleSheet.cssText += cssText;
          } else {
            styleElm.appendChild(doc.createTextNode(cssText));
          }
        }
docs: Adds a style element at the top of the document with the specified cssText content.
  
  @method addStyle
  @param {String} cssText CSS Text style to add to top of head of document.