title: Drawing PNG to a canvas element -- not showing transparency
body: <p>I'm trying to use drawImage to draw a semi-transparent PNG on a canvas element. However, it draws the image as completely opaque. When I look at the resource that's being loaded and load the actual PNG in the browser, it shows the transparency, but when I draw it on the canvas, it does not. Any ideas?</p>
  
  <p>Here's the code:</p>
  
  <pre><code>drawing = new Image() 
  drawing.src = "draw.png" 
  context.drawImage(drawing,0,0);
  </code></pre>