<div class="suche">
    <asp:Panel ID="PanelHeader" runat="server" >
        <table width="100%">
            <tr valign="middle">
                <td align="left"><h1>Sportplatz</h1></td>
                <td align="right"><asp:Button ID="ButtonResize" _
                  runat="server" style="width:20px; height:20px;" /></td>
            </tr>
        </table>
 
    </asp:Panel>
    <br />
    <asp:Label ID="LabelAdresseEigenName" runat="server"></asp:Label>
    <br />
    <br />
            <asp:Panel ID="PanelContent" runat="server">
                <table style="width:100%;">
                    <tr>
                        <td>
                            <iframe id="IFrameLocation" runat="server" _
                              style="width:325px; height:255px;" & _
                              "overflow:hidden;">
                                <!-- Hier kommt die Karte hin -->
                            </iframe>
                        </td> 
                        <td>    
                            <h2>Beschreibung:</h2>
                            <br/>
                            <asp:Literal ID="LiteralBeschreibung" _
                              runat="server" ></asp:Literal>
                        </td>
                    </tr>
                </table>
                <asp:CollapsiblePanelExtender _
                  ID="CollapsiblePanelExtenderContent" runat="server"
                    TargetControlID ="PanelContent" 
                    CollapseControlID="ButtonResize"  
                    CollapsedSize="0" 
                    ExpandControlID="ButtonResize" 
                    ExpandedSize="300"  
                    SuppressPostBack="true">
                </asp:CollapsiblePanelExtender>
            </asp:Panel>
</div>