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() == 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")
if (now.getDay() == 0) return ("星期日")
}

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"
}