function correctAnswer(right,wrong){var r=document.getElementById(right);var w=document.getElementById(wrong);w.style.display="none";r.style.display="block"}function incorrectAnswer(right,wrong){var r=document.getElementById(right);var w=document.getElementById(wrong);r.style.display="none";w.style.display="block"}function correctAnswer3(right,wrong1,wrong2){var r=document.getElementById(right);var w1=document.getElementById(wrong1);var w2=document.getElementById(wrong2);w1.style.display="none";w2.style.display="none";r.style.display="block"}function incorrectAnswer3(right,wrong1,wrong2){var r=document.getElementById(right);var w1=document.getElementById(wrong1);var w2=document.getElementById(wrong2);r.style.display="none";w1.style.display="none";w2.style.display="block"}function onYouTubePlayerReady(playerId){ytplayer=document.getElementById("myytplayer")}function play(){if(ytplayer){ytplayer.playVideo()}};