function showPic (whichpic, captionText, altText) {
	
	// empty the td tag
	$("#loader").empty();
	
	// load new image
	if ($("#loader").append('<img src="' + whichpic + '" alt="' + altText + '" />')) {
		$("#galleryCaption").empty();
		$("#galleryCaption").append(captionText);
	} else {
		return false;
	}
}