Помощь по скрипту

<script type="text/javascript">
function player_change(a,b) {
    $("#player_id_"+b).attr("src", a.value);
    var c = localStorage["player"];
    if(!c) c = new Object;
    else c = JSON.parse(c);
    
    if(c[b]) var i = c[b];
    else var i = new Object;
    i[b] = a.index;
    c[b] = i;
    localStorage["player"] = JSON.stringify(c);
}

$(function() {
    $("iframe[id^=player_id_]").each(function(e) {
        var a = $(this).data("post-id");
        var b = $(this).data("post-id");
        var c = localStorage["player"];
    
        if(c) {
            c = JSON.parse(c);
            if(c[a]) c = c[a];
            if(c[b]) c = c[b];
            $("#player_select_"+b+" option").each(function(e,t){
                if(e==c) {
                    $("#player_id_"+b).attr("src", t.value);
                    $(this).prop("selected", true);
                }
            });
        }
    });
});
</script>

<table align="center" cellspacing="0" cellpadding="0">
    <tbody>
        <tr>
            <td>
                <iframe data-post-id="{news-id}" id="player_id_{news-id}" src="" width="560" height="315" frameborder="no" scrolling="no"></iframe>
            </td>
            <td>
                <select id="player_select_{news-id}" size="20" onchange="player_change(this.options[this.selectedIndex], {news-id});">
                    <option value="https://vk.com/video_ext.php?oid=-10010155&id=169511007&hash=86185aefa2a2d4b7" selected="selected">1 серия</option>
                    <option value="https://vk.com/video_ext.php?oid=-10010155&id=169511009&hash=3ed1e1996f5c8f74">2 серия</option>
                    <option value="и.т.д.">3 серия</option>
                    <option value="и.т.д.">4 серия</option>
                    <option value="и.т.д.">5 серия</option>
                </select>
            </td>
        </tr>
    </tbody>
</table>