$(function() {
  //scrollpane parts
  var scrollPane = $( ".calendar-wrapper" ),
  scrollContent = $( "#calendar" );
  contentWidth = ((scrollContent.find('li').outerWidth()-1) * (scrollContent.find('li').length)) +2;
  scrollContent.width(contentWidth)
      
  if(scrollContent.children().length <=4){
    $( ".scroll-bar-wrap" ).hide();
  }
    
  //build slider
  var scrollbar = $( ".scroll-bar" ).slider({
    slide: function( event, 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() );
    })
  .wrap( "<div class='ui-handle-helper-parent'></div>" ).parent();
		
  //size scrollbar and handle proportionally to scroll distance
  function sizeScrollbar() {
    var remainder = scrollContent.width() - scrollPane.width();
    var proportion = remainder / scrollContent.width();
    
    var handleSize = $('ui-slider-handle').width();
   
    scrollbar.find( ".ui-slider-handle" ).css("margin-left","-50px");
  //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" ), 10 );
    var gap = scrollPane.width() - showing;
    if ( gap > 0 ) {
      scrollContent.css( "margin-left", parseInt( scrollContent.css( "margin-left" ), 10 ) + gap );
    }
  }
		
  //change handle position on window resize
  $( window ).resize(function() {
    resetValue();
    sizeScrollbar();
    reflowContent();
  });
  //init scrollbar size
  setTimeout( sizeScrollbar, 10 );//safari wants a timeout
});