function left1titleover(obj)
{
    switch(obj)
    {
        case "left1_title1":
            left1_title1.className="lefttitle1";
            left1_title2.className="lefttitle";
            left1_title3.className="lefttitle";
            left1_body1.className="leftbody";
            left1_body2.className="leftbody1";
            left1_body3.className="leftbody1";
            break;
        case "left1_title2":
            left1_title2.className="lefttitle1";
            left1_title1.className="lefttitle";
            left1_title3.className="lefttitle";
            left1_body2.className="leftbody";
            left1_body1.className="leftbody1";
            left1_body3.className="leftbody1";
            break;
        case "left1_title3":
            left1_title3.className="lefttitle1";
            left1_title1.className="lefttitle";
            left1_title2.className="lefttitle";
            left1_body3.className="leftbody";
            left1_body1.className="leftbody1";
            left1_body2.className="leftbody1";
            break;
        
    }
}
function left2titleover(obj)
{
    switch(obj)
    {
        case "left2_title1":
            left2_title1.className="lefttitle1";
            left2_title2.className="lefttitle";
            left2_title3.className="lefttitle";
            left2_body1.className="leftbody";
            left2_body2.className="leftbody1";
            left2_body3.className="leftbody1";
            break;
        case "left2_title2":
            left2_title2.className="lefttitle1";
            left2_title1.className="lefttitle";
            left2_title3.className="lefttitle";
            left2_body2.className="leftbody";
            left2_body1.className="leftbody1";
            left2_body3.className="leftbody1";
            break;
        case "left2_title3":
            left2_title3.className="lefttitle1";
            left2_title1.className="lefttitle";
            left2_title2.className="lefttitle";
            left2_body3.className="leftbody";
            left2_body1.className="leftbody1";
            left2_body2.className="leftbody1";
            break;
        
    }
}
function left3titleover(obj)
{
    switch(obj)
    {
        case "left3_title1":
            left3_title1.className="lefttitle1";
            left3_title2.className="lefttitle";
            left3_title3.className="lefttitle";
            left3_body1.className="leftbody";
            left3_body2.className="leftbody1";
            left3_body3.className="leftbody1";
            break;
        case "left3_title2":
            left3_title2.className="lefttitle1";
            left3_title1.className="lefttitle";
            left3_title3.className="lefttitle";
            left3_body2.className="leftbody";
            left3_body1.className="leftbody1";
            left3_body3.className="leftbody1";
            break;
        case "left3_title3":
            left3_title3.className="lefttitle1";
            left3_title1.className="lefttitle";
            left3_title2.className="lefttitle";
            left3_body3.className="leftbody";
            left3_body1.className="leftbody1";
            left3_body2.className="leftbody1";
            break;
        
    }
}
function left4titleover(obj)
{
    switch(obj)
    {
        case "left4_title1":
            left4_title1.className="lefttitle1";
            left4_title2.className="lefttitle";
            left4_title3.className="lefttitle";
            left4_body1.className="leftbody";
            left4_body2.className="leftbody1";
            left4_body3.className="leftbody1";
            break;
        case "left4_title2":
            left4_title2.className="lefttitle1";
            left4_title1.className="lefttitle";
            left4_title3.className="lefttitle";
            left4_body2.className="leftbody";
            left4_body1.className="leftbody1";
            left4_body3.className="leftbody1";
            break;
        case "left4_title3":
            left4_title3.className="lefttitle1";
            left4_title1.className="lefttitle";
            left4_title2.className="lefttitle";
            left4_body3.className="leftbody";
            left4_body1.className="leftbody1";
            left4_body2.className="leftbody1";
            break;
        
    }
}
function left5titleover(obj)
{
    switch(obj)
    {
        case "left5_title1":
            left5_title1.className="lefttitle1";
            left5_title2.className="lefttitle";
            left5_title3.className="lefttitle";
            left5_body1.className="leftbody";
            left5_body2.className="leftbody1";
            left5_body3.className="leftbody1";
            break;
        case "left5_title2":
            left5_title2.className="lefttitle1";
            left5_title1.className="lefttitle";
            left5_title3.className="lefttitle";
            left5_body2.className="leftbody";
            left5_body1.className="leftbody1";
            left5_body3.className="leftbody1";
            break;
        case "left5_title3":
            left5_title3.className="lefttitle1";
            left5_title1.className="lefttitle";
            left5_title2.className="lefttitle";
            left5_body3.className="leftbody";
            left5_body1.className="leftbody1";
            left5_body2.className="leftbody1";
            break;
        
    }
}

function date(){   
    //arguments JS自带的变量   
    this.length = arguments.length;   
    for(var  i= 0; i < this.length; i ++){   
        this[i] = date.arguments[i];   
    }   
}   
  
function displaytime(){    
    var d  = new Date();   
    var h = d.getHours();   
    var m = d.getMinutes();   
    var s = d.getSeconds();   
       
    //0-2 午夜 2-5 凌晨 5-9 早上 9-12 上午 12-14 中午 14-18 下午 18-24 晚上      
    var ampm = "上午";   
    if (h >= 0 && h < 2) ampm = "午夜";   
    if (h >= 2 && h < 5) ampm = "凌晨";   
    if (h >= 5 && h < 9) ampm = "早上";   
    if (h >= 9 && h < 12) ampm = "上午";   
    if (h >= 12 && h < 14) ampm = "中午";   
    if (h >= 14 && h < 18) ampm = "下午";   
    if (h >= 18) ampm = "晚上";   
    //12小时制   
    if (h >12) h -= 12;   
    //补0   
    if (m < 10) m = "0" + m;   
    //补0   
    if (s < 10) s = "0" + s;   
    var time = ampm + h + ":" + m + ":" + s;   
    //年月日和星期   
    var day  = new date("星期日","星期一","星期二","星期三","星期四","星期五","星期六");   
    var ymd = d.getYear() + "年" + (d.getMonth() + 1) + "月" + d.getDate() + "日" +  day[d.getDay()];   
    //取得显示位置   
    var tiemarea = document.getElementById("timearea");   
    timearea.innerHTML = ymd + "  "  + time;   
  
    setTimeout("displaytime()",1000);   
}