function toggleMetadata(obj, dir, e, size, newClassName, newWidth, newHeight) {
	var tables = obj.getElementsByTagName('table');
	var thetable = tables[0], i;
	if (isMouseLeaveOrEnter(e, obj)){
		var siblings = thetable.parentNode.getElementsByTagName('div');
		if (dir == 'over') {
			for (i = 0; i < siblings.length; i++) {
				if (siblings[i].className == 'fullMetadata') {
					siblings[i].style.display='block';
				} else if (siblings[i].className == 'briefMetadata') {
					siblings[i].style.display = 'none';
				}
			}
		} else if (dir == 'out') {
			for (i = 0; i < siblings.length; i++) {
				if (siblings[i].className == 'fullMetadata' || siblings[i].className == 'briefMetadata') {
					siblings[i].style.display = '';
				}
			}
		}

		if (size != 'pg_thumb_large'){
			thetable.className = newClassName;
			changeChildSize(thetable, newWidth, newHeight);
		}
	}
}

function changeChildSize(obj,width,height) {
	var images = obj.getElementsByTagName('img');
	images[0].style.width = width+'px';
	images[0].style.height = height+'px';
}