Saving authentication username password in cookie

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.NET

jQuery

I have link which is given by the client, every time when i acces the link it asks for authentication(Username,password) in a popup. After i enter UserName,Password it allows me inside the site
During first time login i have checked the "RememberMe" check box, so when accessing it for next time the authentication popup is not shown and i could enter into the site successfully

But the requirement is to store the username, password(With Remember me option) in cookie before accessing the site, so even during first time login i dont want to give my credential to login

I need to do this using jquery(.net)
Any help would be greatly appreciated.

Thanks in advance