Onclick and previous_post_link

Hi All:

I’m using the UpPrev plugin on my blog to increase pageviews. It creates a fly-out box that includes a link to the previous post when you scroll past a certain point in the page. In order to make sure it’s really helping pageviews, I created a goal in Google Analytics and want to append code in the onclick paramenter in previous_post_link to see if it’s working.

Any ideas?

Thanks!