{mouseup,8}{mousedown,19}{mousedown,19}click on a "checkbox" widget. <body ref="0"><form id="mturk_form" ref="1"><div id="wrap" ref="2"><div id="area" ref="3"><div ref="4"><button text="5lm6" ref="5"><label ref="7"><input type="checkbox" recordingtarget="true" value="false" ref="8"><label ref="11"><input_radio value="false" ref="12"></INPUT_radio><t text="tbhst" ref="13">