/**
 * Changes the description on the main archipelago page.
 */
function changeDescription(divname, value) {
    if (value) {
	var welcomeDiv = document.getElementById("welcome.description");
	welcomeDiv.style.display = 'none';
	var otherDiv = document.getElementById(divname);
	otherDiv.style.display = '';	}
    else {	
	var welcomeDiv = document.getElementById("welcome.description");
	welcomeDiv.style.display = '';
	var otherDiv = document.getElementById(divname);
	otherDiv.style.display = 'none';
    }
}