<a href="#">TIKLA</a>
<span>W3TR</span>

a{display: inline-block; background: #00FF99; padding:20px; border-bottom:4px solid #00CC00; color:#00CC99; text-decoration:none; margin-bottom:20px;}
span{display:block; font-size:30px; color:red;}

$("a").click(function(){
  var x = $("span").position();
  alert("üstten pozisyonu: " + x.top + " soldan pozisyonu: " + x.left);
});