Checking if the Internet and a particular site are up in JavaScript/AJAX

Question

I have a page which runs locally on my device, and I would like to use AJAX or normal JavaScript to check if the device is connected to the Internet and if a pa

Answer 1

Cross site Ajax is forbidden due to security concerns. A few work arounds would be to either use greasemonkey/userscripts(if this is just for personal use), or a plugin such as flash or java