/*  
 调用方式：<div id="timer"></div>  
*/
$(document).ready(function(){  
        setInterval(showTime, 1000);                                  
        function timer(obj,txt){  
                        obj.text(txt);  
        }          
        function showTime(){                                  
                var today = new Date();  
                var weekday=new Array(7)  
                weekday[0]="星期一"
                weekday[1]="星期二"
                weekday[2]="星期三"
                weekday[3]="星期四"
                weekday[4]="星期五"
                weekday[5]="星期六"
                weekday[6]="星期日"                                        
                var y=today.getFullYear()+"年";  
                var month=today.getMonth()+"月";  
                var td=today.getDate()+"日 ";  
                var d=weekday[today.getDay()]+" ";  
                var h=today.getHours()+" : ";  
                var m=today.getMinutes()+" : ";  
                var s=today.getSeconds();          
                timer($("#timer"),y+month+td+d+h+m+s);              
        }          
})