function getElementHeight(element) {
	var height = 0;
	if (typeof($(element).innerHeight) == 'number') {
		height = $(element).innerHeight;
	}
	else {
		height = $(element).clientHeight;
	}
	return height;
}
function togglePhotos(num) {
	var element = 'photos-' + num;
	var elementNav = 'nav-photos-' + num;
	for (i=1; i <= 3; i++) {
		var currentElement = 'photos-' + i;
		var currentNav = 'nav-photos-' + i;
		if ($(currentElement).visible()) {
			if (currentElement != element) {
				$(currentElement).hide();
				$(currentNav).removeClassName('selected');
			}
		}
	}
	$(elementNav).addClassName('selected');
	$(element).appear({duration:.5});
}