How do I click on this button on a web browser

<a class="ff" href="/logout.php?h=AffXMq2EBnHBL-9d&amp;t=1442767182&amp;ref_component=mbasic_footer&amp;ref_page=%2Fwap%2Fprofile_timeline.php&amp;refid=17">Logout (Yavuz Özmen)</a>

how do ı click on "Logout (Yavuz Özmen)"