docs: function addStyleSheet(url, title){
      var element = dom.createElement(!url ? 'style[type="text/css"]' : basis.string.format('link[type="text/css"][rel="{alt}stylesheet"][href="{url}"]', {
        alt: title ? 'alternate ' : '',
        url: url.replace(/\"/g, '\\"')
      }));
  
      basis.doc.head.add(element);
  
      return makeStyleSheetCompatible(element.sheet || element.styleSheet);
    }