Need help in querying Network manager from browser

[Santosh Kumar <100santosh gmail com>]

Hello All,
    I am new to networking and browser related work in Linux. I have a requirement where browser has to query and manage Internet connection.
I am using ubuntu on panda board. I have network manager on it. I dont want to use NM-applet instead i want to control through browser. 
To be precise, i have to pop-up a window when Net goes down and search for new wifi and allow user to enter ID and pass for secured wifi. 
As of now i know we can get these things done by querying dbus. Since i am new to NM, browser and dbus, not able to figure out how to start.
Any links, sample code and suggestion will be very help full for me. 

If not from browser, managing through a shell script will be sufficient. Please guide me how to proceed.

Thanks in advance. 

Regards,
Santosh