ajax timer

Hi,

I'm using javascript to pause and resume ajax timer. i use the button to call my function yet. it wont pause. any one can help ?

Code:

---

<script type="text/javascript">
function startTimer()
{
      var timer = $find("<&#37;=Timer1.ClientID%>")
    timer._startTimer();
}
function stopTimer()
{
      var timer = $find("<%=Timer1.ClientID%>")
    timer._stopTimer();
}
</script>
<asp:Timer ID="Timer1" runat="server" Interval="2000">
        </asp:Timer>

asp:Button ID="Button1" runat="server" Text="Button" OnClientClick="javascript:stopTimer()"  />

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