function setCookie(cookieName,cookieValue,nDays){
/*	alert(cookieName+" = "+cookieValue);*/
	var today = new Date();
	var expire = new Date();
	if (nDays==null || nDays==0) nDays=1;
	expire.setTime(today.getTime() + 3600000*24*nDays);
	document.cookie = cookieName+"="+escape(cookieValue)
		+ ";expires="+expire.toGMTString();
}
function clearCookie(cookieName){
  var today = new Date();
  var expire = new Date();
  expire.setTime(today.getTime() - 3600);
  document.cookie = cookieName+"="+escape('')+";expires="+expire.toGMTString();
}
function addField(){

}