function _nikkanssoauth_write_nickname() {
        document.write(_nikkanssoauth_get_nickname());
}

function _nikkanssoauth_get_nickname() {
	if(_nikkanssoauth_is_nst_cookie()) {
		return 'login';
	} else {
		return '';
	}
}

function _nikkanssoauth_is_nst_cookie() {
        if(!document || !document.cookie)
                return false;

        var matches = document.cookie.match(/_nst=([^;,]+)/);
        if(!matches) {
                return false;
		} else {
				return true;
		}
}

function _nikkanssoauth_get_backurl() {
	var r_backurl = '';

	if(location.search!=""){
		var P=location.search.substring(1).split('&');
		var p;
		for(i= 0;i<P.length;i++){
			if(P[i].indexOf('=')>0){
				p=P[i].split('=');

				if(p[0] == 'backurl'){
					r_backurl = p[1];
					break;
				}

			}
		}
	}

	return r_backurl;
}