I have this in the page to give me access to the animation code:

<cc1:AnimationExtender ID="AnimationExtender1" runat="server" TargetControlID="mainProductImage"></cc1:AnimationExtender>

Here is my client side script:
<script language="javascript" type="text/javascript">

<!--
var imageAnimation = AjaxControlToolkit.Animation.FadeInAnimation;
function GetImage(ImageID) {
          $get("ctl00_ContentPlaceHolder1_ProductControl1_mainProductImage").innerHTML =  "<img src='/products/" + ImageID + "___Selected.jpg' />"; 
          imageAnimation.play($get('ctl00_ContentPlaceHolder1_ProductControl1_mainProductImage'),.6);
    }
//-->
</script>

 I call it by simple passing in the ImageID of the next image I want.  Works great except for if someone does some fast clicking, so I want to not execute this javascript if the previous call is still running.

 Iwas think i could check the property of the animation isPlaying and not call another one if it's true, problem is I don't know how to accomplish this.

Anyone got any ideas?
 

 Hi,

I think you can try get_isPlaying method. 

Any idea how to do that?

I tried with no luck: