Code for text box precision . . before Dot 3 Digit and After Dot 2 digit . . it's working fine in Google Chrome But in IE 10. . How to solve tis???

Code for text box precision . . before Dot 3 Digit and After Dot 2 digit . . it's working fine in Google Chrome But in IE 10. . How to solve tis???

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="test7.aspx.vb" Inherits="test7" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title></title>
    <script type="text/javascript" src="Scripts/jquery.min.js"></script>
    <script type="text/javascript" src="Scripts/jquery-1.4.1.min.js"></script>
    <script type="text/javascript">
        var flag = true;
        $(document).ready(function (e) {
            $(".txt").keypress(function () {
                var keycode = e.keyCode ? e.keyCode : e.which;

                var Split = $('.txt').val().split('.');
                var Split1 = $('.txt').val();
                var currentDate = Split[0];
                var currentDate1 = Split[1];
                var code = event.keyCode;
                if (currentDate.length > 3) {
                    return false;
                }
                if (event.keyCode == 46 && $(this).val().indexOf('.') != -1) {
                    event.preventDefault();
                }
                if (flag == true) {
                    if (currentDate.length == 3) {
                        if (event.keyCode >= 48 && event.keyCode <= 57)
                            return false;
                        flag = false;
                    }
                }
                if (currentDate1.length > 1) {
                    return false;
                }

            });
            $(".txt").keydown(function (e) {
                e.keyCode; // this value
                if (e.keyCode == 8) {
                    flag = true;
                }
            });

        });
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:TextBox ID="txt" class="txt" runat="server"></asp:TextBox>
   
    </div>

    </form>
</body>
</html>