I get around that by calling a Javascript function that returns a control containing the name Dock_MyTasks.  But, when I look at the running HTML, there are multiple HTML elements that contain the name Dock_MyTasks.  They are suffixed with _T, _C, _ClientState.  Here's the JavaScript I'm trying to use.  Everyhing seems to execute just fine until I call the GetClientId function.  What am I doing wrong?

function miClicked(sender, e) {

var MenuItem = e.get_item();

var DockName = MenuItem.get_value();

var dock = GetClientId(DockName);

var isClosed = dock.get_closed();

// Gets the ASP.NET generated control ID

function GetClientId(controlId) {

var count = document.forms[0].length;

var i = 0;

var aspControlId;

for (i = 0; i < count; i++) {

if (pos >= 0) break;

}
return document.forms[0].elements[i];

Thank you..

<telerik:RadAjaxPanel ID="radAjaxPanel1" runat="server" LoadingPanelID="radldpnlContactInfo">
    <asp:Panel ID="Panel1" runat="server" Visible="False">
        <table id="Table1"><tr><td>
                                <telerik:RadComboBox ID="RadComboBox1" runat="server"
                                    AutoPostBack="true" OnSelectedIndexChanged="RadComboBox1_SelectedIndexChanged">
                                </telerik:RadComboBox>
                            </td>

                            <td valign="top">
                                <br />
                                <asp:Button ID="button1" runat="server" OnClick="button1_Click" Text="Test1"
                                    /><br />
                                <asp:Button ID="button2" runat="server" OnClick="button2_Click" Text="Test2"
                                     />
                            </td>
                        </tr>
                    </table>
</asp:Panel>
</telerik:RadAjaxPanel>