vk script

if (-1 != url.indexOf("vk.com/audio")) {
    var songs_block = document.getElementById("initial_list");
    var songs = document.getElementsByClassName("audio  fl_l");
    var d_btn = '<div class="d_btn" style="display: block; height: 16px; width: 16px; margin-left: 20px; z-index: 1000000;"></div>';
    var d_link = '<a class="d_link" href="" title="Download">DL</a>';
    var real_btn = '<button class="real" style="width: 16px; height: 16px; margin-left: 20px; z-index: 1000000000;">D</button>';

    for (i = 0; i < songs.length; i++) {
        //add download button
        var button_block = songs[i].getElementsByClassName("play_new")[0];
        button_block.innerHTML += d_btn;
        //button_block.innerHTML += real_btn;

        //modify song_name's block
        var name_block = songs[i].getElementsByClassName("info fl_l")[0];
        name_block.style.width = "320px";
        name_block.style.height = "33px";
        name_block.style.marginLeft = "20px";

        //modify download button
        var d_b = songs[i].getElementsByClassName("d_btn")[0];
        d_b.style.cursor = "default";
        d_b.style.backgroundColor = "white";
        d_b.style.borderRadius = "3px";
        d_b.style.border = "1px solid red";

        //add content link
        d_b.innerHTML += d_link;

        //modify href
        d_l = songs[i].getElementsByTagName("input")[0].value;
        d_b.getElementsByClassName("d_link")[0].href = d_l;

        d_b.getElementsByClassName("d_link")[0].addEventListener("click", function(e) {
            alert(d_b.getElementsByClassName("d_link")[0].href);
            e.stopPropagation();

        })
        //copy song initials to clipboard
    }

}