title: How to draw a line between 2 elements using JQuery and refreshing that line?
body: <p>I am using JQuery-UI draggables and droppables to clone elements onto a div.
  What is the best way to draw a line between elements on a page using JQuery.</p>
  
  <p>What is the best way to refresh lines on the page? I will have multiple lines on the page and only want to update a particular line rather than refresh every line.</p>