function phhIsCookieExist(cookieName){
	var value=phhReadCookie(cookieName);
	if(value != null && value.length > 0){
		return true;
	}else{
		return false;
	}
}
function phhCreateCookie(name,value,days) {
	var expires;
	if (days) {
		var 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 phhReadCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) {
			var userName= c.substring(nameEQ.length,c.length);
			userName = phhFtEscapeXML(unescape(userName));
			return userName;
		}
	}
	return null;
}
function phhEraseCookie(name) {
	phhCreateCookie(name,"",-1);
}
function phhFtEscapeXML(value){
	if(value != null && value.length > 0){
		value = value.replace(/</g, "&lt;"); 
		value = value.replace(/>/g, "&gt;"); 
	}
	return value;
}