// Set the name of our window
self.top.name = 'index_frame';

// This function extract the redirect URL
// from within the querystring.
function getRedirUrl() {
	var QString = window.location.search;
	var redirUrl;
	var posStart;
	var posEnd;

	if (QString == '') return 'main.html';
	else {
		posStart = QString.indexOf('redirTo=');
		if (posStart == -1) return 'main.html';
		else
			posStart += 8;
			posEnd    = QString.indexOf('&', posStart);

		if (posEnd != -1)
			redirUrl = QString.substring(posStart, posEnd);
		else
			redirUrl = QString.substring(posStart, QString.length);

		return redirUrl;
	}
}

// Get Main Frame URL
var mainUrl = getRedirUrl();