Default Button in Panel n't Working in all browser

Question:-Default Button in panel n't working in all browser

Answer:- Write Java Script like this

Script:-

<script>

        function EnterKey(e)

        {            

                // look for window.event in case event isn't passed in

                if (window.event) { e = window.event; }

                if (e.keyCode == 13)

                {

                        document.getElementById('btnchat').click();

                }

        }

        </script>

.aspxCode:-



<asp:TextBox runat ="server"  onkeypress="EnterKey(event);"  ID ="txtchat" TextMode="MultiLine" >

      </asp:TextBox>

  
<asp:Button runat="server" ID ="btnchat" Text ="Send" onclick="btnchatclickevent" />