title: Javascript SVG viewer library
body: <p>I search for javascript svg viewer library which is smooth zoom and drag and move viewport.
  I found <a href="http://www.cyberz.org/blog/2009/12/08/svgpan-a-javascript-svg-panzoomdrag-library/" rel="nofollow">SVGPan</a>. But it's not work smooth.
  Is there any other library?</p>