Hi Guys,
I am using Multiselect to drag/drop.This is working fine in Mozilla but not in IE.(I am using IE7).
The error i am getting is 'getBoundingClientRect' is null or not an object.

The below code is in Updatepanel .If updatepanel is removed it works fine.


<asp:DropDownList ID="ddlFilter" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddlFilter_Change">
                            <asp:ListItem Text="All" Value="0"></asp:ListItem>
                            <asp:ListItem Text="My Scrum Team" Value="1"></asp:ListItem>
                            <asp:ListItem Text="My Project Team" Value="2"></asp:ListItem>
                        </asp:DropDownList>
  <ext:TabPanel ID="TabPanel1" runat="server" Plain="true" Width="600" Height="415"
                            LayoutOnTabChange="true">
                            <Items>
                                <ext:Panel ID="Panel1" runat="server" Title="Select Employees for Chat" Padding="5">
                                    <Items>
                                        <ext:TableLayout ID="TableLayout1" runat="server" Columns="2">
                                            <Cells>
                                                <ext:Cell>
                                                    <ext:Label ID="Label1" runat="server" Html="<div class='label'>Select Employee from list(Drag/Drop)</div>" />
                                                </ext:Cell>
                                                <ext:Cell>
                                                    <ext:Label ID="Label2" runat="server" Html="<div class='label'>Selected Employees</div>" />
                                                </ext:Cell>
                                                <ext:Cell>
                                                    <ext:Panel ID="Panel2" runat="server" Border="false" BodyStyle="height: 340px;">
                                                        <Items>
                                                            <ext:MultiSelect ID="multiSelect1" runat="server" DragGroup="grp1" DropGroup="grp2,grp1"
                                                                Width="300" Height="330" KeepSelectionOnClick="Always">
                                                                <Items>
                                                                </Items>
                                                            </ext:MultiSelect>
                                                        </Items>
                                                    </ext:Panel>
                                                </ext:Cell>
                                                <ext:Cell>
                                                    <ext:Panel ID="Panel3" runat="server" Border="false" BodyStyle="height: 340px;">
                                                        <Items>
                                                            <ext:MultiSelect ID="MultiSelect2" runat="server" DragGroup="grp2" DropGroup="grp1,grp2"
                                                                Width="290" Height="330" KeepSelectionOnClick="Always">
                                                                <Items>
                                                                </Items>
                                                            </ext:MultiSelect>
                                                        </Items>
                                                    </ext:Panel>
                                                </ext:Cell>
                                            </Cells>
                                        </ext:TableLayout>
                                    </Items>
                                    <Buttons>
                                        <ext:Button ID="btnSubmit" runat="server" Text="Submit">
                                            <DirectEvents>
                                                <Click OnEvent="btnSubmit_Click">
                                                    <ExtraParams>
                                                        <ext:Parameter Name="multi2" Value="Ext.encode(#{MultiSelect2}.getValues(true))"
                                                            Mode="Raw" />
                                                    </ExtraParams>
                                                </Click>
                                            </DirectEvents>
                                        </ext:Button>
                                    </Buttons>
                                </ext:Panel>
                            </Items>
                        </ext:TabPanel>
                        <ext:Label ID="Label3" runat="server" />