$(document).ready(function(){
	var currentPosition = 0;
	var slideWidth = 309;
	var slides = $('.slide');
	var numberOfSlides = slides.length;

	// Remove scrollbar in JS
	$('#showcase').css('overflow', 'hidden');

	// Wrap all .slides with #slideInner div
	slides
		.wrapAll('<div id="slideInner"></div>')
		// Float left to display horizontally, readjust .slides width
		.css({
			'float' : 'left',
			'width' : slideWidth
		});

	// Set #slideInner width equal to total width of all slides
	$('#slideInner').css('width', slideWidth * numberOfSlides);

	// Insert controls in the DOM
	$('#showcaseWrapper')
		.prepend('<span class="control" id="leftControl">Posunout doleva</span>')
		.append('<span class="control" id="rightControl">Posunout doprava</span>');

	// Hide left arrow control on first load
	manageControls(currentPosition);

	// Create event listeners for .controls clicks
	$('.control')
		.bind('click', function(){
		// Determine new position
		currentPosition = ($(this).attr('id')=='rightControl') ? currentPosition+1 : currentPosition-1;
		
		// Hide / show controls
		manageControls(currentPosition);
		// Move slideInner using margin-left
		$('#slideInner').animate({
			'marginLeft' : slideWidth*(-currentPosition)
		});
	});

	// manageControls: Hides and Shows controls depending on currentPosition
	function manageControls(position){
		// Hide left arrow if position is first slide
		if(position==0){ $('#leftControl').hide() } else{ $('#leftControl').show() }
		// Hide right arrow if position is last slide
		if(position==numberOfSlides-3){ $('#rightControl').hide() } else{ $('#rightControl').show() }
	}		
 
	$('.control').mouseover(function() { $(this).addClass('over');});
	$('.control').mouseout(function() { $(this).removeClass('over');});
	

	//$.getScript("http://twitter.com/statuses/user_timeline/hell0may.json?callback=twitterCallback2&count=3");
});