How to use the raphael._availableAttrs function in raphael

forEach(rules, function (rule) {
      var style = rule.style, elements = document.querySelectorAll(rule.selectorText), attrs = {};
      for (var name in Raphael._availableAttrs) {
        var value = style[name];
        if (!value) continue;
        // fix for Chrome
        attrs[name] = typeof Raphael._availableAttrs[name] === 'number' ? parseFloat(value) : value;
      }
      forEach(elements, function (element) {
        paper.getById(element.raphaelid).attr(attrs);
      });
    });
  });

forEach(rules, function (rule) {
      var style = rule.style, elements = document.querySelectorAll(rule.selectorText), attrs = {};
      for (var name in Raphael._availableAttrs) {
        var value = style[name];
        if (!value) continue;
        // fix for Chrome
        attrs[name] = typeof Raphael._availableAttrs[name] === 'number' ? parseFloat(value) : value;
      }
      forEach(elements, function (element) {
        paper.getById(element.raphaelid).attr(attrs);
      });
    });
  });