$(function() {
	$('.scroll-content .scroll-content-item:first-child').addClass('first');
	$('.scroll-content .scroll-content-item:last-child').addClass('last');
	
	var divCount = $('.scroll-content > div').size();
	$('.scroll-content').width((divCount*136)-34);
		   
	//scrollpane parts
	var scrollPane = $('.scroll-pane');
	var scrollContent = $('.scroll-content');
	
	//build slider
	var scrollbar = $(".scroll-bar").slider({
		slide:function(e, ui){
			if( scrollContent.width() > scrollPane.width() ){ scrollContent.css('margin-left', Math.round( ui.value / 100 * ( scrollPane.width() - scrollContent.width() )) + 'px'); }
			else { scrollContent.css('margin-left', 0); }
		}
	});
		
		//append icon to handle
		var handleHelper = scrollbar.find('.ui-slider-handle')
		.mousedown(function(){
			scrollbar.width( handleHelper.width() );
		})
		.mouseup(function(){
			scrollbar.width( handleHelper.width() );
			//scrollbar.width( '100%' );
		})
	.append('<div class="leftCap"></div><div class="rightCap"></div>')
	.wrap('<div class="ui-handle-helper-parent"></div>').parent();
	//$('.ui-slider-handle').before('<span class="blank left"></span>').after('<span class="blank right"></span>');
	//change overflow to hidden now that slider handles the scrolling
	scrollPane.css('overflow','hidden');
		
		//size scrollbar and handle proportionally to scroll distance
		function sizeScrollbar(){
			var remainder = scrollContent.width() - scrollPane.width();
			var proportion = remainder / scrollContent.width();
			var handleSize = scrollPane.width() - (proportion * scrollPane.width());
			scrollbar.find('.ui-slider-handle').css({
				width: handleSize,
				'margin-left': -handleSize/2
			});
			handleHelper.width('').width( scrollbar.width() - handleSize);
		}
	
	//reset slider value based on scroll content position
	function resetValue(){
		var remainder = scrollPane.width() - scrollContent.width();
		var leftVal = scrollContent.css('margin-left') == 'auto' ? 0 : parseInt(scrollContent.css('margin-left'));
		var percentage = Math.round(leftVal / remainder * 100);
		scrollbar.slider("value", percentage);
	}
	//if the slider is 100% and window gets larger, reveal content
	function reflowContent(){
			var showing = scrollContent.width() + parseInt( scrollContent.css('margin-left') );
			var gap = scrollPane.width() - showing;
			if(gap > 0){
				scrollContent.css('margin-left', parseInt( scrollContent.css('margin-left') ) + gap);
			}
	}
	
	//change handle position on window resize
	
	$(window)
	.resize(function(){
		resetValue();
		sizeScrollbar();
		reflowContent();
	});
	//init scrollbar size
	setTimeout(sizeScrollbar,10);//safari wants a timeout
	
	

	$('.pastAlbums a').click(function(){
		$('a.ui-slider-handle').addClass('clearfix');
		if ($('.scroll-content .scroll-content-item').size() <= 3){
			$('.scroll-bar').hide();
		} else {
			resetValue();
			sizeScrollbar();
			reflowContent();
		}
		$('.scroll-content .scroll-content-item>a').css({
			border:'solid 1px #c0b88f',
			width:'100px',
			height:'100px',
			display:'block',
			overflow:'hidden'
		})
	})
	
});