music baidu download

var button = document.createElement('span');
button.innerHTML = document.getElementsByClassName('add-song-btn') [0].innerHTML;
button.id = 'dlbutton';
button.getElementsByTagName('i')[0].className.replace('btn-icon-add', 'btn-icon-down');
var tmp;
tmp = button.getElementsByClassName('txt') [0];
tmp.textContent = '下载';
tmp.style.color = 'rgb(0, 150, 255)';
tmp = button.getElementsByClassName('addlayer') [0];
tmp.id = 'dlbutton-menu';
tmp.innerHTML = '<a class="dlbutton-rate" rate="128" href="javascript:void(0);">128kbps</a><a class="dlbutton-rate" rate="192" href="javascript:void(0);">192kbps</a><a class="dlbutton-rate" rate="320" href="javascript:void(0);">320kbps</a><a class="dlbutton-rate" rate="999" href="javascript:void(0);">无损</a>';
document.getElementsByClassName('down-song-btn')[0].insertBefore(button, null);
button.addEventListener('mouseover', function (e) {
e.target.getElementById('dlbutton-menu').style.display = 'block';
}, false);
button.addEventListener('mouseout', function (e) {
e.target.getElementById('dlbutton-menu').style.display = 'none';
}, false);