title: How to know drop position in Html5 drag and drop
body: <p>I'm trying to replace JqueryUi droppable to html5.</p>
  
  <p>And i need to know the exact postion of the draggable object on the moment of the drop.</p>
  
  <p>I know i have the mouse clientX and clientY, but this changes depending on the place you started dragging.</p>
  
  <p>Is there a way to have the position, or the object itself?</p>
  
  <p>Thanks.</p>