var sound1="dande.mid";
var sound2="lupo2.mid";
var x=Math.random()*10;
if (x<=5) { x=sound1; }
else if (x>5) { x=sound2; }

if (navigator.appName=="Microsoft Internet Explorer") {
	document.write('<bgsound src='+'"'+x+'"'+' loop="infinite">');
}
else {
	document.write('<embed src='+'"'+x+'"'+'hidden="true" border="0" width="20" height="20" autostart="true" loop="true">');
}