.animate jquery event handler in the middle of animation
<p>I make this</p>

<pre><code>$("#developments ul").animate({
        marginLeft: -1*((ul_width+li_padding)*(how_many_more+1)+how_many_more*ul_padding)},30000,'linear'
    );
</code></pre>

<p>I want to do something when margin-left of ul=-1*((ul_width+li_padding)*(how_many_more)+how_many_more*ul_padding)
Can i use .change() handler? if yes how can i use this handler?
I try this</p>

<pre><code>$("#developments ul").css("margin-left").change(function() {
        alert("handler");
    });
</code></pre>

<p>But it doesn't work..
This is reasonable because $("#developments ul").css("margin-left") returns a number.
A number as number is static and can't be change never!!
Any help?</p>
