js设置背景音乐播放的例子

function playmiusic(type){
 if(type == ""){
     return;
 }
 var soundky="../flash/k.mp3"  
 var soundsg="../flash/h.mp3"  
 var soundts="../flash/t.mp3"  
 var sound = type == "ky" ? soundky :
      type == "sg" ? soundsg :
      type == "ts" ? soundts : "";
 if (navigator.appname=="microsoft internet explorer"){//ie浏览器
     document.getelementbyid("showmusic").innerhtml = '<bgsound src='+'"'+sound+'"'+' loop="infinite">';
 } else {//其他浏览器
     document.getelementbyid("showmusic").innerhtml = '<embed src='+'"'+sound+'"'+' hidden="true" autostart="true" loop="true">';
 }
}