function setCookie(name, value, days) {
	var now=new Date();
	var expTime=now.getTime()+days*24*60*60*1000;
	var expDate=new Date(expTime);
	document.cookie=name+"="+value+"; EXPIRES="+expDate.toGMTString();
}
function getCookie(name) {
	var start=document.cookie.indexOf(name+"=");
	if(start==-1) return null;
	var len=start+name.length+1;
	var end=document.cookie.indexOf(";", len);
	if(end==-1) {
		end=document.cookie.length;
	} 
	var cookieTxt = document.cookie.substring(len, end) 
	return cookieTxt;
}