// JavaScript Document

function switchRegion(regionName)
{
	// revert all region tabs to 'off' state
	eval("document.getElementById('nav-southamerica').src = 'images/regions/ttl-southamerica.gif'");
	eval("document.getElementById('nav-centralamerica').src = 'images/regions/ttl-centralamerica.gif'");
	eval("document.getElementById('nav-africa').src = 'images/regions/ttl-africa.gif'");
	eval("document.getElementById('nav-europe').src = 'images/regions/ttl-europe.gif'");
	eval("document.getElementById('nav-middleeast').src = 'images/regions/ttl-middleeast.gif'");
	eval("document.getElementById('nav-asia').src = 'images/regions/ttl-asia.gif'");
	eval("document.getElementById('nav-oceania').src = 'images/regions/ttl-oceania.gif'");
	eval("document.getElementById('nav-northamerica').src = 'images/regions/ttl-northamerica.gif'");
	// swap active region tab to 'on' state
	if (regionName != "map") {
		eval("document.getElementById('nav-' + regionName).src = 'images/regions/ttl-' + regionName + '-on.gif'");
	}
	// swap map graphic to active region
	eval("document.images.map.src = 'images/regions/' + regionName + '.gif'"); 

	
}