how to control browser alert and auto fill password

how to control browser alert and auto fill password

I want to show a pdf file in iframe and i keep it(pdf file) password protected. So when the page is loaded then browser show a alert message "this document is password protected. please enter a password". So i want that user can open this document in browser only and if he will download that pdf file, he can not open that due to password protected. Can I solve this with jquery? the password is "123456"
 
Visit http://sitestudy.co.nf/iframe.html to show demo or http://fiddle.jshell.net/dTbjE/