function location_href( $url, $msg="" )
{
 global $g4;

 $array_url = parse_url($url);
 $formname = "form" . time();
 $query = explode("&", $array_url[query]);

 echo "<meta http-equiv='content-type' content='text/html; charset=$g4[charset]'>";

 echo "<form id='$formname' method='get' action='$array_url[path]'>";

 foreach ( $query as $key => $val )
 {
  list( $key2, $val2 ) = explode("=", $val);
  echo "<input type=hidden name=$key2 value='$val2'>";
 }

 echo "</form>";

 echo "<script language='javascript'>";
 if ( $msg )
  echo "alert(\"$msg\");";
 echo "document.getElementById('$formname').submit();";
 echo "</script>";

 exit;
}