Widget:Tooltip

<script> var tooltipSpan = document.getElementsByClassName('tooltip');

window.onmousemove = function (e) {

   var x = e.clientX,
       y = e.clientY;
   for (var i = 0; i < tooltipSpan.length; i++) {
   tooltipSpan[i].style.top = (y + 15) + 'px';
   tooltipSpan[i].style.left = (x + 15) + 'px';
   }

}; </script>