MediaWiki:MusicPlayer.js

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if (document.getElementById('musicPlayerAllow') !== null) {
    var rail = document.getElementById('WikiaRail');
    var node = document.createElement("div");
    var textnode = document.createTextNode("Loading iframe...");
    node.appendChild(textnode);
    node.classList.add("EmulatorFrame");
    //node.style.display = "none";
    rail.appendChild(node);
}