<script type="text/javascript">
        $(document).ready(function () {

            var pathname = window.location.pathname;
            var index = pathname.lastIndexOf("/");
            var filename = pathname.substr(index + 1);

            if (filename == 'Default.aspx' || filename == 'NewSalesUI.aspx' || filename == 'SalesVoid.aspx') {
                $('a[href="' + filename + '"]').attr("class", "main current");
            }
            else {
                index = 0;
                index = pathname.lastIndexOf("Setup");
                if (index > 0) {
                   
                    var elements = $('span .settings');
                    if (elements != null && elements != NaN) {
                        var p = elements.parent().parent();
                        p.attr("class", "main current");
                    }
                    return;
                }

                index = 0;
                index = pathname.lastIndexOf("Operation");
                if (index > 0) {
                    var elements = $('span .operation');
                    if (elements != null && elements != NaN) {
                        var p = elements.parent().parent();
                        p.attr("class", "main current");
                    }
                }

                index = 0;
                index = pathname.lastIndexOf("Account");
                if (index > 0) {
                    var elements = $('span .newsletter');
                    if (elements != null && elements != NaN) {
                        var p = elements.parent().parent();
                        p.attr("class", "main current");
                    }
                    return;
                }

                index = 0;
                index = pathname.lastIndexOf("Report");
                if (index > 0) {
                    var elements = $('span .reports');
                    if (elements != null && elements != NaN) {
                        var p = elements.parent().parent();
                        p.attr("class", "main current");
                    }
                    return;
                }
            }

        });
    </script>