function showbcbox(a){
	for(i=1;i<4;i++){
	document.getElementById("btab"+i).className="tabyb";
	document.getElementById("bcbox"+i).style.display="none";
	}
	document.getElementById("btab"+a).className="bluetabdq";
	document.getElementById("bcbox"+a).style.display="block";
}
function showgcbox(a){
	for(i=1;i<4;i++){
	document.getElementById("gtab"+i).className="tabyb";
	document.getElementById("gcbox"+i).style.display="none";
	}
	document.getElementById("gtab"+a).className="greentabdq";
	document.getElementById("gcbox"+a).style.display="block";
}
function showycbox(a){
	for(i=1;i<4;i++){
	document.getElementById("ytab"+i).className="tabyb";
	document.getElementById("ycbox"+i).style.display="none";
	}
	document.getElementById("ytab"+a).className="yellowtabdq";
	document.getElementById("ycbox"+a).style.display="block";
}
function showweek() //显示中文星期
{
now = new Date() //定义新对象，new具有Date的性质
if (now.getDay() == 0) return ("星期日")
if (now.getDay() == 1) return ("星期一")
if (now.getDay() == 2) return ("星期二")
if (now.getDay() == 3) return ("星期三")
if (now.getDay() == 4) return ("星期四")
if (now.getDay() == 5) return ("星期五")
if (now.getDay() == 6) return ("星期六")
}

function showdate() //显示系统日期
{
var now=new Date();
var year = now.getFullYear();
var month = now.getMonth()+1;
var day = now.getDate();
return year+"年"+month+"月"+day+"日";
}