AJAX not working after rewrite using htaccess

AJAX not working after rewrite using htaccess

my ajax script is not working after applying rewrite rule. The ajax script
is in page http://raymondmiranda.com/image-gallery
my htaccess code is:
RewriteEngine On
# Unless directory, remove trailing slash
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([^/]+)/$ /$1 [R=301,L]
# Redirect external .php requests to extensionless url
RewriteCond %{THE_REQUEST} ^(.+)\.php([#?][^\ ]*)?\ HTTP/
RewriteRule ^(.+)\.php$ /$1 [R=301,L]
# Resolve .php file for extensionless php urls
RewriteRule ^([^/.]+)$ $1.php [L]
#Default Page
DirectoryIndex home.php