When I press upload button its nothing happen no progress bar or uploading

this is my content of uu_defualt_config.pm

package uu_default_config;
use strict;
use Exporter;

@uu_default_config::ISA = qw( Exporter );
@uu_default_config::EXPORT = qw($config);

use vars qw($config);

$config = {
config_file_name => 'uu_default_config',
temp_dir => $ENV{'DOCUMENT_ROOT'} . '/templates_c/',
upload_dir => $ENV{'DOCUMENT_ROOT'} . '/video/',
unique_upload_dir => 0,
unique_upload_dir_length => 16,
unique_file_name => 0,
unique_file_name_length => 16,
max_upload => 20971520000,
overwrite_existing_files => 0,
redirect_after_upload => 1,
redirect_url => ''http://www.tubeirani.com/upload.php',
redirect_using_js_html => 1,
redirect_using_html => 0,
redirect_using_js => 0,
redirect_using_location => 0,
delete_param_file => 1,
get_data_speed => 1000,
disallow_extensions => '(sh|php|php3|php4|php5|py|shtml|phtml|cgi|pl|plx| mp3|htaccess|htpasswd)',
allow_extensions => '(3gp)|(mp4)|(mov)|(asf)|(avi)|(flv)|(wmv)|(mpg)|( mpeg)|(mpeg4)|(xvid)|(divx)|(3gpp)',
normalize_file_names => 1,
normalize_file_delimiter => '_',
normalize_file_length => 32,
link_to_upload => 1,
path_to_upload => 'http://linux/web/vshare/video/',
send_email_on_upload => 0,
html_email_support => 0,
link_to_upload_in_email => 0,
email_subject => 'Uber File Upload',
to_email_address => '[email protected],[email protected]',
from_email_address => '[email protected]',
};

1;