Pinboard bookmarklet that displays the popup centered

pinboard.js

javascript:w=750,h=700,t=(screen.height*.5)-(w*.5),l=(screen.width*.5)-(h*.5),q=location.href,p=document.title;document.getSelection?d=document.getSelection():d='';void(open('https://pinboard.in/add?showtags=yes&url='+encodeURIComponent(q)+'&description='+encodeURIComponent(d)+'&title='+encodeURIComponent(p),'Pinboard','toolbar=no,scrollbars=yes,width='+w+',height='+h+',top='+t+',left='+l));