var i = 0;

var picture = ["bg1.jpg","bg0.jpg"];

var picture1 = ["bg3.jpg","bg2.jpg"];

function getTime(){

//创建时间对象

var time = new Date();

//获取当前年份

var year = time.getFullYear();

//获取当前月份

var month = time.getMonth()+1;

//获取当前日期

var date = time.getDate();

//获取当前小时数

var hours = time.getHours();

//获取当前分钟

var minutes = time.getMinutes();

//获取当前秒数

var seconds = time.getSeconds();

return year + "-" + month + "-" + date + " "

+ hours + ":" + minutes + ":" + seconds;

}

function getBulb() {

document.getElementById("imgShow").src = picture[i];

document.getElementById("onOff").src = picture1[i];

if (i == 0) {

i = 1;

document.getElementById("show").innerHTML += getTime() +

" " + "灯亮了" + "
";

} else {

i = 0;

document.getElementById("show").innerHTML += getTime() +

" " + "灯灭了" + "
";

}

}