function selectPlayer(player) {
var btns = document.querySelectorAll("#player-select button");
var players = document.querySelectorAll("#player-select iframe");
for (var i = 0; i < btns.length; i++) {
btns[i].classList.remove("active");
players[i].classList.remove("active");
}
document.querySelector("#" + player + "-btn").classList.add("active");
document.querySelector("#" + player + "-player").classList.add("active");
}
selectPlayer("doodstream")