title: How to create infinite raphael canvas
body: <p>I created a raphael canvas. There are some draggable circle and rectangle on it. A problem is when I dragged the object to the bottom, the object appeared "half circle" or "half rectangle" and the canvas cannot be extended as the drag movement. How can I create the "infinite" canvas that allows me to drag the object in a larger space.</p>
  
  <p>I am thinking about using viewbox or scroller bar? But seems like scroller bar also have the limit right? Basically,  I have no idea about the borderless canvas. 
  Anyone can help? </p>