function selectContinent(continentName) {
	if (continentName > "") {
		location = location.pathname + "?selectedcontinent=" + continentName;
	}
}
function selectCountry(countryName) {
	if (countryName > "") {
		location.replace(location.pathname + "?selectedcontinent=" + selectedContinent + "&selectedcountry=" + countryName);
	}
}
function selectRegion(regionName) {
	if (regionName > "") {
		location.replace(location.pathname + "?selectedcontinent=" + selectedContinent + "&selectedcountry=" + selectedCountry + "&selectedregion=" + regionName);
	}
}
function selectPublication(publicationURL) {
	if (publicationURL > "") {
		document.getElementById("publicationLink").href = publicationURL;
		document.getElementById("publicationLink").style.visibility = "visible";
	} else {
		document.getElementById("publicationLink").style.visibility = "hidden";
	}
}