var i = Math.round(Math.random()*733);  
var browsername = navigator.appName;
var gettype = browsername;
if (gettype=="Netscape") {
document.write('<embed src="http://www.dabaoku.com/bjyinyue/mid/'+i+'.mid" autostart=true width=0 height=0 repeat=true>')}
else {
document.write('<bgsound src=http://www.dabaoku.com/bjyinyue/mid/'+i+'.mid loop=-1>') }