js引入广告服务

var header = [];
header[1] = {
    ‘title‘ : ‘新浪开始进军微博大战‘,
    ‘pic‘ : ‘images/header1.png‘,
    ‘link‘ : ‘http://www.weibo.com‘
};
header[2] = {
    ‘title‘ : ‘腾讯开始团购系统‘,
    ‘pic‘ : ‘images/header2.png‘,
    ‘link‘ : ‘http://www.qq.com‘
};
header[3] = {
    ‘title‘ : ‘百度开始进军人工智能‘,
    ‘pic‘ : ‘images/header3.png‘,
    ‘link‘ : ‘http://www.baidu.com‘
};
var i = Math.floor(Math.random()*3+1);
document.write(‘<a href="‘+header[i].link+‘" target="_blank" title="‘+header[i].title+‘"><img src="‘+header[i].pic+‘"></a>‘);