// Toggles the display between the full list of results (with descriptions)
// and just a list of maps
function toggle(id)
{
	var secmaps = document.getElementById("resultsmaps");
	var secdescriptions = document.getElementById("resultsdescriptions");
	var mapstab = document.getElementById("mapstab");
	var descriptionstab = document.getElementById("descriptionstab");

	if (secmaps == null || secdescriptions == null) {
		return;
	}

	if (id == "resultsmaps") {
		secmaps.style.display = "";
		secdescriptions.style.display = "none";	
		mapstab.className = "active-tab";
		descriptionstab.className = "tab";
		saveCookie("savedtab",id);
	}
	else if (id == "resultsdescriptions") {
		secmaps.style.display = "none";     
		secdescriptions.style.display = ""; 
		mapstab.className = "tab";
		descriptionstab.className = "active-tab";
		saveCookie("savedtab",id);
	}
	else {
		return;
	}

}

function loadUp()
{
	var savedtab = getCookie("savedtab");

	if (savedtab != null) {
		toggle(savedtab);
	}

}


function saveCookie(name,value)
{
	document.cookie = name + '=' + value;
}

function getCookie(name)
{
	var dcookie = document.cookie.split("; ");
	for (var i=0; i < dcookie.length; i++){
		var crumb = dcookie[i].split("=");
		if (name == crumb[0]) {
			return unescape(crumb[1]);
		}
	}
	return null;
}

function submitBrowseChoice()
{
	var browseindex = document.getElementById('setbrowseselection').selectedIndex;
  var browsevalue = document.getElementById('setbrowseselection')[browseindex].value;

	if (browsevalue == "geographic") {
		document.location.href = "http://www.library.northwestern.edu/govinfo/collections/mapsofafrica/region.html";
		return false;
	}
	else {
		return true;
	}
	
	return false;

}


function toggleMoreInfo()
{
	var sec = document.getElementById("descmore");
	var img = document.getElementById("descmorearrow");
	
	if (sec == null) return;
	
	if (sec.style.display == "") {
		sec.style.display = "none";
		img.src = "http://www.library.northwestern.edu/govinfo/collections/mapsofafrica/images/arrow_77_r.gif";
	}
	else {
		sec.style.display = "";
		img.src = "http://www.library.northwestern.edu/govinfo/collections/mapsofafrica/images/arrow_77_d.gif";
	}

}