var showingHelp=false;

function showHelp() {
	if(showingHelp === false)
	{
		new Effect.Parallel([
			new Effect.BlindDown($('help'), { scaleContent: false, scaleFrom: 0, scaleTo: 100, sync: true }),
			new Effect.Fade($('help'), { from: 0, to: 1.0, sync: true })
		], {
			duration: 3,
			afterUpdate: function () {
				$('help').setStyle({ visibility: 'visible' });
			},
			afterFinish: function() {
				showingHelp = true;
			}
		});
	}
}

function hideHelp() {
	if(showingHelp === true)
	{
		new Effect.Parallel([
			new Effect.BlindUp($('help'), { scaleContent: false, scaleFrom: 100, scaleTo: 0, sync: true }),
			new Effect.Fade($('help'), { from: 1.0, to: 0, sync: true })
		], {
			duration: 3,
			afterFinish: function() {
				showingHelp = false;
			}
		});
	}
}