想写一个随机分组的小程序


<html>
<head>
<script language="JavaScript">   
var arrPep1 = ['老大','老二','老三','老四','老五'];
var arrPep2 = ['小一','小二','小三','小四','小五'];
var opep1 =arrPep1[Math.ceil(0+(arrPep1.length-1)*Math.random())];
var opep2 =arrPep1[Math.ceil(0+(arrPep1.length-1)*Math.random())];
var arrNew = new Array();
arrNew.push(opep1);
arrNew.push(opep2);
alert(arrNew.toString());</script>
</head><body></body>
</html>