Run javascript function (inside a web) with an Unity Launcher quicklist action

A web has an internal javascript function triggered by a click into a link (there is not a direct URL). When you click in the label "Contacts" a popup appears:

<a href="" onclick="showContacts()">Contacts</a>

I want a Launcher quicklist action which calls that function showContacts(). Something like this:

Unity.Launcher.addAction("Contacts",
function(){ document.<I'm lost here>.click(); }
);

How could I do this? Thanks in advance!