// http://www.sohtanaka.com/web-design/automatic-image-slider-w-css-jquery/
$(document).ready(function() {

  //Show the paging and activate its first link
  $(".paging").show();
  $(".paging a:first").addClass("active");

  //Get size of the image, how many images there are, then determin the size of the image reel.
  var imageWidth = $(".window").width();
  var imageSum = $(".image_reel img").size();
  var imageReelWidth = imageWidth * imageSum;

  //Adjust the image reel to its new size
  $(".image_reel").css({'width' : imageReelWidth});

  //Paging  and Slider Function
  rotate = function(){
      var triggerID = $active.attr("rel") - 1; //Get number of times to slide
      var image_reelPosition = triggerID * imageWidth; //Determines the distance the image reel needs to slide

      $(".paging a").removeClass('active'); //Remove all active class
      $active.addClass('active'); //Add active class (the $active is declared in the rotateSwitch function)

      //Slider Animation
      $(".image_reel").animate({
          left: -image_reelPosition
      }, 500 );

  };

  //Rotation  and Timing Event
  rotateSwitch = function(){
      play = setInterval(function(){ //Set timer - this will repeat itself every 7 seconds
          $active = $('.paging a.active').next(); //Move to the next paging
          if ( $active.length === 0) { //If paging reaches the end...
              $active = $('.paging a:first'); //go back to first
          }
          rotate(); //Trigger the paging and slider function
      },2000); //Timer speed in milliseconds (7 seconds)
  };

  rotateSwitch(); //Run function on launch

  //On Hover
  $(".image_reel a").hover(function() {
      clearInterval(play); //Stop the rotation
  }, function() {
      rotateSwitch(); //Resume rotation timer
  });

  //On Click
  $(".paging a").click(function() {
      $active = $(this); //Activate the clicked paging
      //Reset Timer
      clearInterval(play); //Stop the rotation
      rotate(); //Trigger rotation immediately
      rotateSwitch(); // Resume rotation timer
      return false; //Prevent browser jump to link anchor
  });

});