// JavaScript Document
function getCookie(c_name)
{
	
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + "=")
  if (c_start!=-1)
    { 
    c_start=c_start + c_name.length+1 
    c_end=document.cookie.indexOf(";",c_start)
    if (c_end==-1) c_end=document.cookie.length
    return unescape(document.cookie.substring(c_start,c_end))
    } 
  }
return ""
}
function delCookie(name)//删除cookie 
{ 
	var exp = new Date(); 
	exp.setTime(exp.getTime() - 1); 
	var cval=getCookie(name); 
	if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString(); 
}
var timerID = null;
var timerRunning = false;
function stopclock (){
if(timerRunning)
clearTimeout(timerID);
timerRunning = false;}
function startclock () {
stopclock();
delCookie("username");
showtime();}
function showtime () {
var now = new Date();
var hours = now.getHours();
var minutes = now.getMinutes();
var seconds = now.getSeconds()
var timeValue = now.getYear()+"-"+(now.getMonth()+1)+"-"+now.getDate()+"" +((hours >= 12) ? " PM " : " AM " )
timeValue += ((hours >12) ? hours -12 :hours)
timeValue += ((minutes < 10) ? ":0" : ":") + minutes
timeValue += ((seconds < 10) ? ":0" : ":") + seconds
document.getElementById("thetime").innerHTML = timeValue;
timerID = setTimeout("showtime()",1000);
timerRunning = true;}