Bookmaklet overlay javascript

Bookmarklet overlay javascript means put the javascrit into Browser Bookmark which let any website to call that javascript and overlay the current load page.
(Google it if u want to know more)

How to detect iPhone/iPad user coming to my site

See -> Miki's comment, Haven't tried it yet. but it works hopefully!

http://www.askdavetaylor.com/detect_apple_iphone_user_web_site_server.html