old_contents: var processing = false;
  
  // JavaScript source code
  $(document).ready(function () {
  
  $('form').submit(function (evt) {
  	evt.preventDefault();
  	var searchTerm = $('#input').val();
  
  	// AJAX Starts
  
  	var flickrAPI = "https://api.flickr.com/services/feeds/photos_public.gne?jsoncallback=?";
  	var animal = searchTerm;
  	var flickrOptions = {
  		tags: animal,
  		format: "json",
  
  	};
  	function displayPhotos(data) {
  		var photoHTML = '<ul>';
  		$.each(data.items, function(i,photo) {
  			photoHTML += '<li class="grid">';
  			photoHTML += '<a href="' + photo.link + '" class="image">';
  			photoHTML += '<img src="' + photo.media.m + '"></a></li>';
  		});
  		photoHTML += '</ul>';
  		$('#photos').html(photoHTML);
  	}
  
  		$.getJSON(flickrAPI, flickrOptions, displayPhotos);
  
  }) //end submit
  
  // Fire AJAX every time page reaches 70% of height ##########################################
      $(document).scroll(function(e){
          var searchTerm = $('#input').val();
  	var flickrAPI = "https://api.flickr.com/services/feeds/photos_public.gne?jsoncallback=?";
  	var animal = searchTerm;
  	var flickrOptions = {
  		tags: animal,
  		format: "json",
  	};
  
          if (processing) {
              return false;
  	}
          if ( $(document).scrollTop() >= ($(document).height() - $(window).height())) {
  	        console.log('reached');
                  processing = true;
  
  		// AJAX Starts
  		function displayPhotos(data) {
  			var photoHTML += '<ul>';
  			$.each(data.items, function(i,photo) {
  				photoHTML += '<li class="grid">';
  				photoHTML += '<a href="' + photo.link + '" class="image">';
  				photoHTML += '<img src="' + photo.media.m + '"></a></li>';
  			});
  			photoHTML += '</ul>';
  			$('#photos').html(photoHTML);
  		}
  		$.getJSON(flickrAPI, flickrOptions, displayPhotos);
  		processing = false;
          }
      });
  
  //############################################################################################
  	
  }); // end ready
  
  
  
new_contents: var processing = false;
  
  // JavaScript source code
  $(document).ready(function () {
  
  $('form').submit(function (evt) {
  	evt.preventDefault();
  	var searchTerm = $('#input').val();
  
  	// AJAX Starts
  
  	var flickrAPI = "https://api.flickr.com/services/feeds/photos_public.gne?jsoncallback=?";
  	var animal = searchTerm;
  	var flickrOptions = {
  		tags: animal,
  		format: "json",
  
  	};
  	function displayPhotos(data) {
  		var photoHTML = '<ul>';
  		$.each(data.items, function(i,photo) {
  			photoHTML += '<li class="grid">';
  			photoHTML += '<a href="' + photo.link + '" class="image">';
  			photoHTML += '<img src="' + photo.media.m + '"></a></li>';
  		});
  		photoHTML += '</ul>';
  		$('#photos').html(photoHTML);
  	}
  
  		$.getJSON(flickrAPI, flickrOptions, displayPhotos);
  
  }) //end submit
  
  
  // Fire AJAX every time page reaches 70% of height ##########################################
      $(document).scroll(function(e){
          var searchTerm = $('#input').val();
  	var flickrAPI = "https://api.flickr.com/services/feeds/photos_public.gne?jsoncallback=?";
  	var animal = searchTerm;
  	var flickrOptions = {
  		tags: animal,
  		format: "json",
  	};
  
          if (processing) {
              return false;
  	}
          if ( $(document).scrollTop() >= ($(document).height() - $(window).height())) {
  	        console.log('reached');
                  processing = true;
  
  		// AJAX Starts
  		function displayPhotos(data) {
  			var photoHTML += '<ul>';
  			$.each(data.items, function(i,photo) {
  				photoHTML += '<li class="grid">';
  				photoHTML += '<a href="' + photo.link + '" class="image">';
  				photoHTML += '<img src="' + photo.media.m + '"></a></li>';
  			});
  			photoHTML += '</ul>';
  			$('#photos').html(photoHTML);
  		}
  		$.getJSON(flickrAPI, flickrOptions, displayPhotos);
  		processing = false;
          }
      });
  
  //############################################################################################
  }); // end ready
  
subject: Update scripts.js