title: Rendering canvas script twice
body: <p>I have a canvas with some ballons that I got from the internet, I need that to finish my job :).
  Basically, I could use that canvas in one side of my page, but I need the canvas ballons on the other side, so I changed the</p>
  
  <p><code>&lt;canvas id="canvas"&gt;&lt;/canvas&gt;</code> </p>
  
  <p><strong>to</strong> </p>
  
  <p><code>&lt;canvas class="canvas"&gt;&lt;/canvas&gt;</code></p>
  
  <p>and used the tag again in the section that I need, but that doesn't work, do you guys know how can I solve that problem?</p>