document.write("<Div ID='SiteGongGao'><span class='text'><strong>欢迎来到呼呼猫窝~</strong></span><span id='times'></span></div>");
<!--
setTimeout("closeWindow()", 1000);
//<span id='time'>999</span>
var sec = 0;
function closeWindow() 
{
    sec++;
    // 此处设置多少秒关闭。 
    if (sec == 999) {
        //window.opener = null;
        //window.open('', '_self');
        //self.close();
        //document.getElementById("SiteGongGao").style.display="none";
        return false;
    }
    var sy = ( 999-sec); 
    //document.all.time.innerHTML = sy; 
    //setTimeout("closeWindow()", 1000);
}

//当前时间显示
var timerID = null;
var timerRunning = false;
function stopclock ()
{
	if(timerRunning)
	clearTimeout(timerID);
	timerRunning = false;
}
function startclock () 
{
	stopclock();
	showtime();
}
function showtime () 
{
	var now = new Date();
	var hours = now.getHours();
	var minutes = now.getMinutes();
	var seconds = now.getSeconds();
    var day = now.getDay();
    var week="";
    
    switch(day){
    case 1:
    week="星期一";
    break;
    case 2:
    week="星期二";
    break;
    case 3:
    week="星期三";
    break;
    case 4:
    week="星期四";
    break;
    case 5:
    week="星期五";
    break;
    case 6:
    week="星期六";
    break;
    default:
    week="星期日";
    break;
    }
    
	var timeValue = now.getYear()+ "/" + (now.getMonth()+1)+ "/"  +now.getDate()+ " "  + week+" " +((hours >= 12) ? "下午 " : "上午 " );
	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;
}

//开关灯代码
function Csschange(type,IsSetCookie){
    var css=document.getElementById("cssid");
    if (type=="PM" &&  css.getAttribute("href")!="/css/pmcss.css")
    {
    	if(IsSetCookie==1)
        {
        	SetCookie ("csstime", "PM");
        }
        css.setAttribute("href","/css/pmcss.css");
        document.getElementById("CssChange").innerHTML = "开灯";	
    }
    else
    {
    	if(IsSetCookie==1)
        {
        	SetCookie ("csstime", "AM");
        }
        css.setAttribute("href","/css/amcss.css");
        document.getElementById("CssChange").innerHTML = "关灯";	
    }
}
function SetCookie(name,value)//两个参数，一个是cookie的名子，一个是值
{
    var Days = 1; //此 cookie 将被保存 30 天
    var exp  = new Date();    //new Date("December 31, 9998");
    exp.setTime(exp.getTime() + Days*24*60*60*1000);
    document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
}
function getCookie(name)//取cookies函数        
{
    var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));
     if(arr != null) return unescape(arr[2]); return null;

}
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();
}

if(getCookie('csstime')==null)
{
    var newtime=new Date();
    var timehours=newtime.getHours();
    if(timehours>=18 || ( timehours>=0 && timehours<=6))
    {
        Csschange("PM",1);
    }
    else
    {
        Csschange("AM",1);
    }
}
else
{
    Csschange(getCookie('csstime'),0);	
}
//-->