title: Is there a way to use JavaScript to convert a PNG's white background to a transparent background?
body: <p>I have a bunch of .pngs that have nothing but black text on a white background. Until now these have all been displayed on a white background on the screen, so there has been no problem; but now, I am changing the coloring of the background. The problem is that the text looks a bit off when set against an off-white background, so I'm interested in knowing whether JavaScript (jQuery is fine) is capable of converting a .png's white background to a transparent background on the fly. I am <em>not</em> interested in a server-side solution to this problem (e.g., a script to run through all images and do it programmatically with an image library) and the shear number of images makes a do-it-by-hand approach impractical.</p>
  
  <p>Does anyone know of a way to do this? Searching didn't reveal anything. Note that I am <strong>not</strong> looking for the IE .png fix!</p>
  
  <p>If there is a way, what would be the overhead associated with such a process?</p>
  
  <p>Thanks for any help!</p>