网页中如何进行网页内容分享到微博上

*微博分享*/
function shareweibo() {
    window.sharetitle = $(".print-tit").html();//分享的标题
    window.shareUrl = $(".print-info img").eq(0).attr(‘src‘);//分享显示的图片(默认第一张图片)
    share();
}

function share() {
    (function(s, d, e) {
        try {} catch (e) {}
        var f = ‘http://v.t.sina.com.cn/share/share.php?‘,
            u = window.location.href,
            p = [‘url=‘, e(u), ‘&title=‘, e(window.sharetitle), ‘&appkey=1389975891‘, ‘&pic=‘, e(window.shareUrl)].join(‘‘);

        function a() {
            if (!window.open([f, p].join(‘‘), ‘mb‘, [‘toolbar=0,status=0,resizable=1,width=620,height=450,left=‘, (s.width - 620) / 2, ‘,top=‘, (s.height - 450) / 2].join(‘‘))) u.href = [f, p].join(‘‘);
        };
        if (/Firefox/.test(navigator.userAgent)) { setTimeout(a, 0) } else { a() }
    })(screen, document, encodeURIComponent);
}