el botón asp OnClientClick falla, es decir, 10

I have the code below, that I use to submit data to the server, I disable the button so the member not able to click the button multiple times (avoid multiple submissions) and i show moving image "in progress so the member knows something is happening.. "

The code works in firefox, ie 8,9 but fails on ie 10, what happens it kinda gets stuck on that page and doesnt go to the next page...

código asp.net

<p id="pInprogress" style="display: none">
                <img src="images/PleaseWait.gif" style="width: 30px;" id="imgWait" runat="server" />
 </p>


 <asp:Button ID="btNext"
         runat="server" 
         Text="Next"
         OnClick="btNext_Click" 
          OnClientClick="this.disabled = true; this.value = 'Submit in progress...'; inprogress();" 
          UseSubmitBehavior="false"  />

función javascript

    function inprogress() {
        document.getElementById("pInprogress").style.display = "";          
    }

any ideas why it fails....

gracias