function getLogo()
{
//得到当前的年月日
var mydate  = new Date();
var yeas     = mydate.getFullYear();
var mons     = mydate.getMonth()+1;
var days     = mydate.getDate();


var istheyear = 0;
var mydate2 = mydate;
var mydate3 = mydate;
mydate2.addDays(5);
mydate3.addDays(-2);

if(mydate2.getFullYear()>yeas){
	
	istheyear = mydate2.getFullYear();
}else if(mydate3.getFullYear()<yeas){
	
	istheyear = mydate3.getFullYear();
}else{
	istheyear = yeas;
}


var nowdate = yeas+"-"+mons+"-"+days;

//得到1和2的随机数
var a=Math.floor(Math.random()*2+1);
var yuandan=Math.floor(Math.random()*2+1);
var ertong =Math.floor(Math.random()*2+1);
var jianjun =Math.floor(Math.random()*2+1);
var guoqing =Math.floor(Math.random()*2+1);
var duanwu =Math.floor(Math.random()*2+1);
var qingming =Math.floor(Math.random()*2+1);
	//得到公立下的节日和对应的Logo

	var dateinfo   	= new Array();
	if(yuandan == 1)
	{
		dateinfo[0]	= new Array("1-1","english/logo/logo0101.jpg");         //元旦
	}
	else
	{
		dateinfo[0]	= new Array("1-1","english/logo/logo0101.jpg");         //元旦
	}
	if(ertong == 1)
	{
		dateinfo[1]	= new Array("6-1","english/logo/head.jpg");        //儿童节
	}
	else
	{
		dateinfo[1]	= new Array("6-1","english/logo/head.jpg");        //儿童节
	}
	if(jianjun == 1)
	{
		dateinfo[2]	= new Array("8-1","english/logo/head.jpg");        //建军节
	}
	else
	{
		dateinfo[2]	= new Array("8-1","english/logo/head.jpg");        //建军节
	}
	if(guoqing == 1)
	{
		dateinfo[3]	= new Array("10-1","english/logo/head.jpg");       //国庆节
	}
	else
	{
		dateinfo[3]	= new Array("10-1","english/logo/head.jpg");       //国庆节
	}
	

	if(a == 1)
	{
		dateinfo[4]	= new Array("12-25","english/logo/logo1225.jpg");  //圣诞节
	}
	else
	{
		dateinfo[4]	= new Array("12-25","english/logo/shengdan.jpg");  //圣诞节
	}
	if(duanwu == 1)
	{
		dateinfo[5]	= new Array("6-11","english/logo/head.jpg");       //端午节
	}
	else
	{
		dateinfo[5]	= new Array("6-11","english/logo/head.jpg");       //端午节
	}
	if(qingming == 1)
	{
		dateinfo[6] = new Array("4-5","english/logo/head.jpg");		//清明节
	}
	else
	{
		dateinfo[6] = new Array("4-5","english/logo/head.jpg");		//清明节
	}
	
	


//计算时间得出Logo
    
    var   sDObj=new   Date(parseInt(mydate.getFullYear()),parseInt(mydate.getMonth()+1)-1,parseInt(mydate.getDate()));
    var   lDObj=new   Lunar(sDObj);
    var lm = lDObj.month;
    var ld = lDObj.day;


    //计算得出春节Logo
    if((lm==1 && ld<15) || (lm==12 && ld>=25)){
         document.getElementById('head-image').style.backgroundImage="url('english/logo/logol0101.jpg')";
    }else{
        for(i=0;i<dateinfo.length;i++){

            var yearstr = istheyear+"-"+dateinfo[i][0];
			//alert(yearstr);
            var cd = daysBetween(yearstr,nowdate);
            if(cd >=-2 && cd <=5)
                {
                    document.getElementById("head-image").style.backgroundImage="url("+dateinfo[i][1]+")";
                }
        }
    }
}