var cookieEnabled = false;	// Whether the browser support/enabled cookie
var browserInfo = navigator.userAgent;   // Used to get browser type
var browserType = "";			// Type of browser; MSIE (Internet Explorer), Webkit (KHTML engine, ie Safari), Gecko (Mozilla engine ie Firefox) & Opera

if (browserInfo.search("MSIE") != -1) {   // Microsoft Internet Explorer
	browserType = "MSIE";
} else if (browserInfo.search("WebKit") != -1) {   // Any browser that uses Apple's WebKit engine (based on KHTML engine)
	browserType = "WebKit";
} else if (browserInfo.search("KHTML") != -1) {   // Any browser that uses KHTML engine besides WebKit
	browserType = "KHTML";
} else if (browserInfo.search("Gecko") != -1) {   // Any browser that uses Gecko engine (engine that used by Mozilla/Firefox)
	browserType = "Gecko";
} else if (browserInfo.search("Opera") != -1) {   // Opera browser
	browserType = "Opera";
} else browserType = "Unknown";   // Any browser that does not belong to above category

// JavaScript Document
function createCookie(name, value, days) {
	var date;
	var expires;

	if (days) {
		date = new Date();
		date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
		expires = "; expires=" + date.toGMTString();
	} else expires = "";
	document.cookie = name + "=" + value + expires + "; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	var c;

	for(var i = 0; i < ca.length; i++) {
		c = ca[i];
		while (c.charAt(0) == ' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name, "", -1);
}