$(function() {
	//scrollpane parts
	
	$('.scroll-pane').each(function() {
  	var scrollPane = $(this); 
    var scrollContent = $('.scroll-content', scrollPane);
  	
  	//build slider
  	var scrollbar = $(".scroll-bar", scrollPane).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( '100%' );
  	})
  	.append('<span class="ui-icon ui-icon-grip-dotted-vertical"></span>')
  	.wrap('<div class="ui-handle-helper-parent"></div>').parent();

  	//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);
  	}

  	//init scrollbar size
    setTimeout(sizeScrollbar,10);//safari wants a timeout	  
  });
	

});