function doResize () {
	if (document.documentElement.clientHeight < document.body.clientHeight) {
		if (document.getElementById('toTop').style.display = 'none') {
			document.getElementById('toTop').style.display = 'block';
		}
	} else {
		if (document.getElementById('toTop').style.display = 'block') {
			document.getElementById('toTop').style.display = 'none';
		}
	}
}

function openRoute (src) {
	new_src = src.replace (/.jpg/gi, '-full.jpg');
	route = window.open ('', 'Routebeschrijving', 'menubar=no, status=no, toolbar=no, resizable=no, width=808, height=742');
	route.document.write ('<a href=\'#\' onclick=\'window.close (); return false;\'><img src=\'' + new_src + '\' alt=\'Route\' style=\'border: none;\' /></a>');
	route.document.close ();
}