<a class="td-social-sharing-buttons td-social-facebook" href="http://www.facebook.com/sharer.php?u=' . urlencode( esc_url( get_permalink() ) ) . '" onclick="window.open(this.href, \'mywin\',\'left=50,top=50,width=600,height=350,toolbar=0\'); return false;"><img alt="Share to Facebook" src="https://lh4.googleusercontent.com/-Sw73vNFEAGg/VJTgYX_WpMI/AAAAAAAAAgQ/cP9wdN9x2Ls/h87/facebook-share-button.png" style="border:none;" width="250px"></div></a>