XPATH SELECTOR to get the next href element

Dear All, A newbie to XPATH,

I need an xpath to get the HREF tag after the span class="on" list item

The HTML structure is below. (sorry the editor wont allow me to post HTML in. Can I do 开发者_运维百科that?) The image file is here: http://imageshack.us/f/846/xpathselector.png/

Please advise. Thank you very much. San

you described it in words...

//span[@class='on']/parent::li/following-sibling::li[1]/a

but why are you talking about XPath since you're working with JQuery and can use css selectors ?