if you have firefox, install a plugin called firebug. You open it and select the link. The code will show up and will display if its a dofollow or a nofollow.
firebug is good but there is another Firefox plugin that I use called NODOFOLLOW which quickly highlights the no follows in red and the follows in purple.
You should install a plugin "NoDoFollow". It is a simple extension to highlight links in a page according to nofollow / dofollow status.
Install "searchstatus" add on and you will see its blue icon with white @ sign inside. right click on it and then click highlight nofollow links. it will highlights all links that are no follow. easy peasy