function chkAlert(){
	var flag;
	if($("#ceroAlert").length){
		flag = $.cookie(pageID);
		if(flag){
			$.cookie(pageID,1,{expires:1});
			$("#main").removeClass('ceroZ');
		}
	}
}

function agreeAlert(){
	var stamp = new Date().getTime();
	$.cookie(pageID,1,{expires:1});
	$("#main").removeClass('ceroZ');
}

function returnBack(){
	var ref = document.referrer;
	if(ref){
		location.href = ref;
	}else{
		location.href = "/";
	}
}

$(chkAlert);