Display Message (alert)

put this on master page

 function DisplayMessage(msg, loading, loadingstart) {
            var width = $(window).width();
            var divwidth = $("#divStatusMsg").width();
            $("#divStatusMsg").css({
                marginLeft: (width / 2) - (divwidth / 2)
            });
            if (typeof (loading) == 'undefined') {
                $("#divmsg").html(msg);
                $("#divStatusMsg").fadeIn(300).delay(2000).fadeOut(300);
            }
        }



--------------------
<div id="divStatusMsg">
        <div class="bl">
            <div class="br">
                <div class="tl">
                    <div id="divmsg" class="tr">
                    </div>
                </div>
            </div>
        </div>
    </div>