Ajax animator

Question

Hi, I am using an AJAX animation extender. I enlarge am image on a button click and reduce the image on a hover over. I want to limit the size of the image to only one click Which is 2 times the original size. Can any one help with this?
vs 2008 .net 3.5 c#

  <asp:Image ID="Image1" runat="server" ImageUrl="Sunset.jpg" />
  <asp:AnimationExtender ID="AnimationExtender1" runat="server" TargetControlID="Image1">
  <Animations>
 
  <OnLoad>
  <FadeIn Duration = "2" MinimumOpacity= ".2" MaximumOpacity="1" />
  </OnLoad>
 

  <OnClick>
  <Parallel>
  <FadeIn Duration = "2" MinimumOpacity= ".2" MaximumOpacity="1" />
  <Scale ScaleFactor="2" />
  </Parallel>
  </OnClick>
  <OnHoverOut>
  <Parallel>
  <FadeOut Duration = "2" MinimumOpacity= ".2" MaximumOpacity="1" />
  <Scale ScaleFactor =".66" Duration=".5" />
  </Parallel>
  </OnHoverOut>
 
  </Animations>
  </asp:AnimationExtender>