quick check for online status with jQuery

hasInternets.js

//quick online/offline check
function hasInternets() {
	var s = $.ajax({ 
		type: "HEAD",
		url: window.location.href.split("?")[0] + "?" + Math.random(),
		async: false
	}).status;
	//thx http://www.louisremi.com/2011/04/22/navigator-online-alternative-serverreachable/	
	return s >= 200 && s < 300 || s === 304;
};