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<asp:UpdatePanel ID="U2" UpdateMode="conditional" runat="server">
<ContentTemplate>
<asp:TextBox ID="txtContent" runat="server" SkinID="abc" TextMode="MultiLine" Rows="5"
Style="float: left;"></asp:TextBox>
<div style="margin-left: 6px; float: left; padding-top: 2.5em;">
<asp:Label ID="lblTips" runat="server" CssClass="Warning" /><br />
<asp:Button ID="btnSend" runat="server" Height="40px" SkinID="abc" Text="Send" Width="60px"
OnClick="btnSend_Click" />
</div>
</ContentTemplate>
</asp:UpdatePanel>
<script type="text/javascript">
var txtContent = $get("<%=txtContent.ClientID%>");
var btnSend = $get("<%=btnSend.ClientID%>");
var dvList = $get("dvList");
var tips = $get("<%= lblTips.ClientID %>");
function ctrlEnter()
{
if(window.event.ctrlKey&&window.event.keyCode==13)
{
btnSend.click();
}
}
function scrolltoBottom()
{
dvList.scrollTop = dvList.scrollHeight - dvList.clientHeight;
}
txtContent.onkeydown = ctrlEnter;
var t = setTimeout("scrolltoBottom()",2000);
</script>