How to open RadWindow witout any postback (Need Urgently)

[Manish]

Hi

This code is not working

<script type="text/javascript">
    /* Using radopen */
    function ShowExisting1() {
        //Show an existing window
        window.radopen(null, "RadWindow1");
        //First argument is the URL. Since no url is provided, the NavigateUrl property set on the server will be used.
    }
    /* Using RadWindowManager.open */
    function ShowExisting2() {
        //Call existing global function to obtain a reference to the window manager
        var oManager = GetRadWindowManager();
        //Show a particular existing window
        oManager.open(null, "RadWindow2");
    }
    // using RadWindow.show
    function ShowExisting3() {
        var oWnd = $find("RadWindow1");
        oWnd.show();
    }
    /* Show new window */
    function ShowNewWindow() {
        //Show new window
        //not providing a name as a second parameter
        // creates a new window
        var oWindow = window.radopen("http://www.google.com", null);
        //Using the reference to the window its clientside methods can be called
        oWindow.setSize(400, 400);
    }
</script>
    <form id="form1" runat="server">
    <div>
    <telerik:RadScriptManager runat="server" ID="rcm"></telerik:RadScriptManager>
      <telerik:RadWindowManager ID="RadWindowManager1" runat="server">
    <Windows>
        <telerik:RadWindow ID="RadWindow1" runat="server" NavigateUrl="http://www.google.com">
        </telerik:RadWindow>
        <telerik:RadWindow ID="RadWindow2" runat="server" NavigateUrl="http://www.telerik.com">
        </telerik:RadWindow>
    </Windows>
</telerik:RadWindowManager>
       
the client-side code for opening windows

        <button onclick="ShowExisting1();return false;" class="Button" style="width: 190px" id="btnclick" runat="server">
    Show window (using radopen)</button>
call the various client-side functions

<br>
<button onclick="ShowExisting2();return false;" class="Button" style="width: 190px" >
    Show window (using open)</button>
<br>
<button onclick="ShowExisting3();return false;" class="Button" style="width: 190px">
    Show window (using show)</button>
<br>
<button onclick="ShowNewWindow();return false;" class="Button" style="width: 190px">
    Show new window</button>
    </div>
    </form>


Please provide some useful links.

Thanks
Manish