Codeigniter website not opening solution

Plz check the .htaccess file
if not exists please reupload to the  codeigniter framework folder..

Copy paste this code to .htaccess file and save to server ..

DirectoryIndex index.php
RewriteEngine on
Rewritecond $1 !^(index\.php|(.*)\.swf|forums|images|css|downloads|jquery|js|robots\.txt|favicon\.ico)
Rewritecond %{REQUEST_FILENAME} !-f
Rewritecond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ ./index.php?$1 [L,QSA]

Thanks.........