function isFitHeightPresent() {
	return (typeof fitHeight == 'function');
}

function resetHeightIfNecessary() {
	if (isFitHeightPresent()) {
		$('#leftContent, #centerContent, #rightContent').height("auto");
	}
}

function execFitHeightIfNecessary() {
	if (isFitHeightPresent()) {
		fitHeight();	
	}
}

function getEntriesDiv(id) {
	return $('#entries' + id);
}
 
function showEntries(id) {
	resetHeightIfNecessary();
	getEntriesDiv(id).fadeIn("fast", function() {
		execFitHeightIfNecessary();
	});
};
	 
function hideEntries(id) {
	getEntriesDiv(id).fadeOut("fast", function() {
		resetHeightIfNecessary();
		execFitHeightIfNecessary();
	});
}; 


$(document).ready(function(){
	
	var idShow = "_show";
	var idHide = "_hide";
	
	$(".guestbookParagraph").each(function() {
		var id = $(this).attr('id').replace('pa','');
		$(this).find('#a' + id + idShow).click(function(e) {e.preventDefault(); showEntries(id)});
		$(this).find('#a' + id + idHide).click(function(e) {e.preventDefault(); hideEntries(id)});
	});

});