// ************************************
// THESE ARE CANNED FUNCTIONS FOR HANDLING WRITING/READING COOKIES IN JAVASCRIPT.
function createCookie(name, value, days){
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name){
	var ca = document.cookie.split(';');
	var nameEQ = name + "=";
	for(var i=0; i < ca.length; i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1, c.length); //delete spaces
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
	}
	return null;
}

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