How to remove index.php from url

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond $1 !^(index\.php|(.*)\.swf|forums|images|css|fonts|downloads|jquery|js|robots\.txt|favicon\.ico)

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

RewriteRule ^(.*)$ index.php/$1 [L]

RewriteRule ^(admin/)$ admin/login.php?/$1 [L]
RewriteRule ^([A-Za-z0-9-]+)/?$ index.php?id=$1 [L]
</IfModule>