//Device detection 
(function(){
	var _h = location.hostname;
	var _d = /^www./.test(_h) ? _h.substring(4) : _h;
	if(document.cookie.indexOf("btg_device=") == -1){
		document.cookie = "btg_device="
			+ "m:" + (+false)
			+ ",t:" + (+false)
			+ ";path=/; expires=" + (new Date("December 31, 2038")).toUTCString() 
			+ ";domain=" + _d;
	}
})();