Atlas problem with the encoding

I have designed a page with atlas new version.

My page load withs the right encoding but when I use the update funcitonality , the text in the textboxes became corrupted if the text is in turkish

? becames ?.......how do I specify the endoing of my update panel ??

MY Update Panel

<asp:UpdatePanelID="upPnlCriteria"runat="server">

<ContentTemplate><tableid="tblCriteria"border="0"cellpadding="0"cellspacing="0"style="width: 100%"><tr><tdstyle="width: 165px; height: 23px;"valign="top"><asp:DropDownListID="ddlFilterField1"runat="server"Width="156px"TabIndex="4"AutoPostBack="True"OnSelectedIndexChanged="ddlFilterField1_SelectedIndexChanged"></asp:DropDownList> </td><tdstyle="width: 165px; height: 23px;"valign="top"><asp:DropDownListID="ddlOper1"runat="server"Width="156px"TabIndex="5"></asp:DropDownList></td><tdvalign="top"colspan="2"style="text-align: left; height: 23px;"><asp:TextBoxID="txtFilterVal1"runat="server"Width="150px"TabIndex="6"Height="15px"></asp:TextBox></td></tr><tr><tdstyle="width: 165px;"><asp:DropDownListID="ddlFilterField2"runat="server"Width="156px"TabIndex="7"AutoPostBack="True"OnSelectedIndexChanged="ddlFilterField2_SelectedIndexChanged"></asp:DropDownList></td><tdstyle="width: 165px;"><asp:DropDownListID="ddlOper2"runat="server"Width="156px"TabIndex="8"></asp:DropDownList></td><tdcolspan="2"><asp:TextBoxID="txtFilterVal2"runat="server"Width="150px"TabIndex="9"Height="15px"></asp:TextBox></td></tr><tr><tdstyle="width: 165px;"><asp:DropDownListID="ddlFilterField3"runat="server"Width="156px"TabIndex="10"AutoPostBack="True"OnSelectedIndexChanged="ddlFilterField3_SelectedIndexChanged"></asp:DropDownList></td><tdstyle="width: 165px;"><asp:DropDownListID="ddlOper3"runat="server"Width="156px"TabIndex="11"></asp:DropDownList></td><tdcolspan="2"><asp:TextBoxID="txtFilterVal3"runat="server"Width="150px"TabIndex="12"Height="15px"></asp:TextBox></td></tr><tr><tdcolspan="4"style="height: 15px"></td></tr></table><br/><hrstyle="height: 1px"/><asp:LabelID="lblMaxFields"runat="server"SkinID="LabelError"Visible="False"></asp:Label><br/><tableid="tblFieldList"style="width: 508px"><tr><tdrowspan="1"style="width: 175px; padding-left: 5px;"><strong>Tüm Alanlar</strong></td><tdalign="center"style="width: 10%"></td><tdrowspan="1"style="width: 175px"><strong>Listelenecek Alanlar</strong></td><tdrowspan="1"style="width: 10%"></td></tr><tr><tdrowspan="5"style="width: 175px; padding-left: 5px;"><asp:ListBoxID="ListBoxAttributesToShow"runat="server"Rows="8"SelectionMode="Multiple"Width="170px"Height="380px"TabIndex="3"></asp:ListBox></td><tdalign="center"rowspan="2"style="width: 10%"> <asp:ImageButtonID="btnrightArrow"runat="server"ImageUrl="~/IMAGES/ikons/arrowsag.gif"OnClick="btnrightArrow_Click"/></td><tdrowspan="5"style="width: 175px"><asp:ListBoxID="LstSelected"runat="server"Height="380px"SelectionMode="Multiple"Width="170px"></asp:ListBox></td><tdrowspan="2"style="width: 10%; text-align: center;"><asp:ImageButtonID="btnUpArrow"runat="server"ImageUrl="~/IMAGES/ikons/arrowyukari.gif"OnClick="btnUpArrow_Click"/></td></tr><tr></tr><tr><tdalign="center"style="width: 10%"> <asp:ImageButtonID="btnLeftArrow"runat="server"ImageUrl="~/IMAGES/ikons/arrowsol.gif"OnClick="btnLeftArrow_Click"/></td><tdrowspan="1"style="width: 10%; text-align: center;"><asp:ImageButtonID="btnDownArrow"runat="server"ImageUrl="~/IMAGES/ikons/arrowasagi.gif"OnClick="btnDownArrow_Click"/></td></tr><tr><tdalign="center"style="width: 10%; text-align: left;"valign="top"><strong><spanstyle="font-size: 8pt"><spanstyle="color: #dc143c">C</span><spanstyle="color: crimson">TRL tu?una basarak g?rüntülemek

istedi?iniz alanlar?n tümünü

<br/>

aktarabilirsiniz.

</span></span></strong></td><tdrowspan="1"style="width: 10%"valign="top"><strong><spanstyle="font-size: 8pt"><spanstyle="color: #dc143c">G?sterilecek alanlar?n

s?ralamas?n? yukar?daki ok tu?lar?

ile ayarlay?n?z..

</span></span></strong></td></tr><tr><tdalign="center"style="width: 10%; height: 184px;"valign="top"></td><tdrowspan="1"style="width: 10%; height: 184px;"valign="top"></td></tr><tr><tdcolspan="4"rowspan="1"style="padding-right: 5px; padding-bottom: 5px; text-align: center"valign="middle"><asp:LabelID="lblError"runat="server"SkinID="LabelError"Text="Lütfen listelenecek alanlar? se?iniz."Visible="False"></asp:Label></td></tr></table></ContentTemplate><Triggers><asp:AsyncPostbackTriggerControlID="ddlEntityType"EventName="SelectedIndexChanged"/></Triggers></asp:UpdatePanel>