var clock = function(clockName){

     var mydate = new Date();

     var hours = mydate.getHours();

     var minutes = mydate.getMinutes();

     var seconds = mydate.getSeconds();

     var month = (mydate.getMonth()+1);

     var date = mydate.getDate();

     var day = new Date().getDay();

     var text = "";

     switch (day) {

         case 0:

             text = "周日";

             break;

         case 1:

             text = "周一";

             break;

         case 2:

             text = "周二";

             break;

         case 3:

             text = "周三";

             break;

         case 4:

             text = "周四";

             break;

         case 5:

             text = "周五";

             break;

         case 6:

             text = "周六";

             break;

   }

   if(month < 10){

       month = '0' + month;

   }

   if(date < 10){

       date = '0' + date;

   }

   if(hours < 10){

       hours = '0' + hours;

   }

   if(minutes < 10){

       minutes = '0' + minutes;

   }

   if(seconds < 10){

       seconds = '0' + seconds;

   }

   var str = text +" "+ month + "-" + date + " " + hours +":"+ minutes;

   $('#' + clockName).html("").text(str);

 }