var ns4up1 = (document.layers) ? 1 : 0;

            var ie4up1 = (document.all&&(navigator.appVersion.indexOf("MSIE 4") == -1)) ? 1 : 0;

            var ns6up1 = (document.getElementById&&!document.all) ? 1 : 0;

            function nowclock() {

            if (!ns4up1 && !ie4up1 && !ns6up1) return false;

            var digital = new Date();

            var hours = digital.getHours();

            var minutes = digital.getMinutes();

            var seconds = digital.getSeconds();

            var day = digital.getDate();

            var month = digital.getMonth() + 1;

            var year = digital.getYear();

            var amOrPm ="am";

            if (hours > 11) amOrPm ="pm";

            if (hours > 12) hours = hours - 12;

            if (hours == 0) hours = 12;

            if (minutes < 10) minutes = "0" + minutes;

            if (seconds < 10) seconds = "0" + seconds;

            if (day < 10) day = "0" + day;

            if (month < 10) month = "0" + month;

            dispTime = hours + ":" + minutes + ":" + seconds + " " + amOrPm;

            dispDate = year + "年" + month + "月" + day+ "日 " ;

            if (ns4up1) {

            document.layers.nowTime.document.write(dispTime);

            document.layers.nowTime.document.close();

            document.layers.nowDate.document.write(dispDate);

            document.layers.nowDate.document.close();

            } else if (ns6up1){

            document.getElementById("nowTime").innerHTML = dispTime;

            document.getElementById("nowDate").innerHTML = dispDate;

            } else if (ie4up1){

            nowTime.innerHTML = dispTime;

            nowDate.innerHTML = dispDate;

            } setTimeout("nowclock()", 1000);

            } nowclock();