function showcurrtime() {
                var hours, minutes, seconds, xfile;
                var intHours, intMinutes, intSeconds;
                var today, theday;
                today = new Date();
                function initArray(){
                    this.length=initArray.arguments.length
                    for(var i=0;i<this.length;i++){this[i+1]=initArray.arguments[i];}
                }
                var d=new initArray("星期日","星期一","星期二","星期三","星期四","星期五","星期六");
                theday = today.getYear()+"年" + [today.getMonth()+1]+"月" +today.getDate() +"日 "+ d[today.getDay()+1];
                hours = today.getHours();
                intMinutes = today.getMinutes();
                intSeconds = today.getSeconds();
                if (intMinutes < 10) {
                minutes = "0"+intMinutes+":";
                } else {
                minutes = intMinutes+":";
                }
                if (intSeconds < 10) {
                seconds = "0"+intSeconds+" ";
                } else {
                seconds = intSeconds+" ";
                }
                timeString = theday+" "+hours+":"+minutes+seconds;
                document.getElementById("span_clock").innerHTML = timeString;
                window.setTimeout("showcurrtime();", 1000);
                }