RewriteEngine On

## Rewrite "/wp/wp-admin/admin-ajax_action/<param-value>.htm" to "/wp/wp-admin/admin-ajax.php?action=<param-value>"
#RewriteRule ^/wp/wp\-admin/(admin\-ajax_action)/([\w-]+)\.htm$ /wp/wp-admin/index.php?action=$2 [QSA,L]

# Rewrite "/wp/wp-admin/admin-ajax.php?action=<param-value>" to "/wp/wp-admin/admin-ajax_action/<param-value>.htm"
RewriteCond %{THE_REQUEST} (action)=([\w-]+)
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule .*wp\/wp-admin\/admin-ajax(.*) /wp/wp-admin/admin-ajax_%1/%2.htm?t=4 [QSA,NC,L]

###RewriteCond %{THE_REQUEST} (action)=([\w-]+)
###RewriteRule ^ /wp/wp-admin/admin-ajax_$1/$2.htm [R,L,QSD]

<IfModule mod_headers.c>
    Header set Access-Control-Allow-Origin "*"
</IfModule>