function openImage(objHref,objText) {
	if (document.getElementById('overall') && document.getElementById('mapimage')) {
		document.getElementById('overall').style.display = 'block';
		document.getElementById('mapimage').src = objHref;

	}
}

function closeImage(objHref,objText) {
	if (document.getElementById('overall') && document.getElementById('mapimage')) {
		document.getElementById('overall').style.display = 'none';
		document.getElementById('mapimage').src = 'images/blank.gif';

	}
}