<span> Tag Attributes
Attributes of the <span> tag
| global attributes | The only attributes that can be coded on the <span> tag are the common HTML attributes. A class attribute or style attribute is often used to style the inner HTML of the span element. |
span tag for Google Translate
Although it is a misuse of the class attribute on the span tag, Google Translate recognizes the specific value notranslate, indicating that the content of the element should not be translated into other spoken languages.
http://www.Google.com/help/faq_translation.html#donttrans
Example
<span class="notranslate"/>