Cross-browser background Y position animation?
<p>I'm currently using this to animate background positions:</p>

<pre><code>$('#icon' + n).animate({ backgroundPositionY : "-=5px" }, 250 );
$('#icon' + n).animate({ backgroundPositionY : "+=5px" }, 250 );
</code></pre>

<p>Chrome is warning me <code>backgroundPositionY</code> will be deprecated, also it get's buggy if zoom is different than 100% and Firefox and Explorer don't even run the animation.</p>

<p>What is the correct method to animate background Y position?</p>
