//a.html
  <script>  function f1()
  {
 window.open('b.html','new','location=no,top=0,left=0');
 }
 </script>
 <input type="button" value=ooooo onclick="f1()">
//b.html
<script>
function f1()
{window.opener.opener=null;window.opener.close();
 window.location.href="a.html";
}
</script>
<input type="button" id="btnclose()" value="关闭" onclick="f1()">