How do I make an element scale down to nothing using a CSS transition on the iPhone?

Question

I’m trying to use the proprietary iPhone Safari properties -webkit-transition and -webkit-transform to make an element disappear with a graceful animation. Code:

<div id="right" style="font-size: 500%; text-align: center; background-color: #fdf; -webkit-transition-property: -webkit-transform; -webkit-transition-duration: 1s;">3</div>

<script type="text/javascript">
    function shrinky() {
        this.style.webkitTransform = 'scale(0,1)';
    }

    document.getElementById('right').onclick = shrinky;
</script>

I’d expect the element to shrink down to invisible with a graceful animation.

This works fine on desktop Safari (3.2.1 (5525.27.1) on OS X 10.5.6), but on the iPhone (iPhone OS 2.2.1 (5H11)), the div just disappears abruptly.

Is there any way to make the animation work like Apple’s documentation (registration required, I think) says it should?

Answer 1

Setting the first scale argument to a very small decimal, rather than 0, seems to make the animation work. Code:

<div id="right" style="font-size: 500%; text-align: center; background-color: #fdf; -webkit-transition-property: -webkit-transform; -webkit-transition-duration: 1s;">3</div>

<script type="text/javascript">
    function shrinky() {
        this.style.webkitTransform = 'scale(0.000001,1)';
    }

    document.getElementById('right').onclick = shrinky;
</script>

Not sure if this is an iPhone bug or not, but it seems like it.