onClick javascript in bottons.

I’d like to add an onClick event to the botton short code, but I don’t see any documentation on that. can you help me out? is it possible?

The below clearly does not work:
[button icon=”icon-chevron-right” special_style=”no” color=”orange” size=”default ” three_d=”yes” title=”Get a quote” link=”onClick=’javascript:someCode();'”
new_tab=”no” animation=”right-to-left” animation_delay=”2000″ class=””]

steve