Any Way To Merge Two OnClick Statements

I try to figure out how I can merge two onclick in one: The one is opening a "lightbox" div with a fullsize view. Now I would like to count this click with loading a site in an iframe. I am not that known in javascript, therefore my question: Is it possible?

This would load the iframe:
PHP Code:
onclick=parent.fullsize.location='[URL]';

This is the onclick statement in the lightbox.js:
PHP Code:
anchor.onclick=self._genOpener(num)}var body=d.getElementsByTagName("body")[0];

Separated the both onclick are not working. How I can put them together in one onclick? I tried this, but it is not working:
PHP Code:
anchor.onclick=self._genOpener(num)}var body=d.getElementsByTagName("body")[0] && parent.fullsize.location='[URL]';