function arrowOn(menuitem) {
	document.getElementById('menu_'+menuitem+'_arrow').style.backgroundPosition = '19px'; }
function arrowOff(menuitem) {
	document.getElementById('menu_'+menuitem+'_arrow').style.backgroundPosition = '0px'; }

function showH2 (gallery) {
	document.getElementById('photos_h2').innerHTML = gallery; }

function externalLinks() { 
	if (!document.getElementsByTagName) return; 
	var anchors = document.getElementsByTagName("a"); 
	for (var i=0; i<anchors.length; i++) { 
		var anchor = anchors[i]; 
		if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "nofollow") {
			anchor.target = "_blank"; }}} 
	window.onload = externalLinks;