if (navigator.appName == "Netscape") { 
     document.write('<EMBED SRC="music/cavatina.mid" AUTOSTART="true" HIDDEN="true" 	LOOP="true"></EMBED>') }
 else{ 
 	if (navigator.appName == "Microsoft Internet Explorer") 
     	document.write('<BGSOUND SRC="music/cavatina.mid" LOOP="-1">')
  }