function setCookie(cookieName,cookieValue,nDays) {
	var today = new Date();
	var expire = new Date();
	if (nDays==null) nDays=0;
	expire.setTime(today.getTime() + 3600000*24*nDays);
	document.cookie = cookieName+"="+escape(cookieValue)
	+ ";expires="+expire.toGMTString();
}

function getCookie(cookieName) {
	var theCookie=""+document.cookie;
	var ind=theCookie.indexOf(cookieName);
	if (ind==-1 || cookieName=="") return "";
	var ind1=theCookie.indexOf(';',ind);
	if (ind1==-1) ind1=theCookie.length;
	return unescape(theCookie.substring(ind+cookieName.length+1,ind1));
}

function DeleteCookie(name)
{ var exp = new Date();
  exp.setTime (exp.getTime() - 1);
  var cval = ReadCookie (name);
  document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();

}