function get_cookie(name) {
	
	var start = document.cookie.indexOf(name+"=");
	var len = start+name.length+1;
	if ((!start) && (name != document.cookie.substring(0,name.length)))
		return null;
	if (start == -1) return null;
	var end = document.cookie.indexOf(";",len);
	if (end == -1) end = document.cookie.length;
	return unescape(document.cookie.substring(len,end));
}

function parse_domain () {
	tmp = document.domain.split (".");
    return tmp[tmp.length-2] + "." + tmp[tmp.length-1];

}

function set_cookie(name,value,expires,path,domain,secure) {
	
	document.cookie = name + "=" +escape(value) +
	( (expires) ? ";expires=" + expires.toGMTString() : "") +
	( (path) ? ";path=" + path : "") +
	( (domain) ? ";domain=" + domain : ";domain=page.ca" ) +
	( (secure) ? ";secure" : "");
}

function del_cookie(name,path,domain) {
	if (get_cookie(name)) { 
		set_cookie ( name, "", 0 );
	}
}

function expiry_date(days) {
	var tDate = new Date();
	var eDate = new Date(tDate.getTime() + (days * 86400000));
	return eDate;
}