function change_gb_page (seite) {

	var loc = document.location.href;
	var newloc = "";
	var pos = loc.indexOf('&gb_page');

	if (pos > -1) {
		newloc = loc.substr(0, loc.indexOf('&gb_page'));
	} else {
		newloc = loc;
	}

	document.location.href = newloc + '&gb_page=' + seite;
}

function change_news_page (seite) {

	var loc = document.location.href;
	var newloc = "";
	var pos = loc.indexOf('&n_page');

	if (pos > -1) {
		newloc = loc.substr(0, loc.indexOf('&n_page'));
	} else {
		newloc = loc;
	}

	document.location.href = newloc + '&n_page=' + seite;
}