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+/*! Scroller 2.0.5
+ * ©2011-2021 SpryMedia Ltd - datatables.net/license
+ */
+
+/**
+ * @summary     Scroller
+ * @description Virtual rendering for DataTables
+ * @version     2.0.5
+ * @file        dataTables.scroller.js
+ * @author      SpryMedia Ltd (www.sprymedia.co.uk)
+ * @contact     www.sprymedia.co.uk/contact
+ * @copyright   Copyright 2011-2021 SpryMedia Ltd.
+ *
+ * This source file is free software, available under the following license:
+ *   MIT license - http://datatables.net/license/mit
+ *
+ * This source file is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the license files for details.
+ *
+ * For details please refer to: http://www.datatables.net
+ */
+
+(function( factory ){
+	if ( typeof define === 'function' && define.amd ) {
+		// AMD
+		define( ['jquery', 'datatables.net'], function ( $ ) {
+			return factory( $, window, document );
+		} );
+	}
+	else if ( typeof exports === 'object' ) {
+		// CommonJS
+		module.exports = function (root, $) {
+			if ( ! root ) {
+				root = window;
+			}
+
+			if ( ! $ || ! $.fn.dataTable ) {
+				$ = require('datatables.net')(root, $).$;
+			}
+
+			return factory( $, root, root.document );
+		};
+	}
+	else {
+		// Browser
+		factory( jQuery, window, document );
+	}
+}(function( $, window, document, undefined ) {
+'use strict';
+var DataTable = $.fn.dataTable;
+
+
+/**
+ * Scroller is a virtual rendering plug-in for DataTables which allows large
+ * datasets to be drawn on screen every quickly. What the virtual rendering means
+ * is that only the visible portion of the table (and a bit to either side to make
+ * the scrolling smooth) is drawn, while the scrolling container gives the
+ * visual impression that the whole table is visible. This is done by making use
+ * of the pagination abilities of DataTables and moving the table around in the
+ * scrolling container DataTables adds to the page. The scrolling container is
+ * forced to the height it would be for the full table display using an extra
+ * element.
+ *
+ * Note that rows in the table MUST all be the same height. Information in a cell
+ * which expands on to multiple lines will cause some odd behaviour in the scrolling.
+ *
+ * Scroller is initialised by simply including the letter 'S' in the sDom for the
+ * table you want to have this feature enabled on. Note that the 'S' must come
+ * AFTER the 't' parameter in `dom`.
+ *
+ * Key features include:
+ *   <ul class="limit_length">
+ *     <li>Speed! The aim of Scroller for DataTables is to make rendering large data sets fast</li>
+ *     <li>Full compatibility with deferred rendering in DataTables for maximum speed</li>
+ *     <li>Display millions of rows</li>
+ *     <li>Integration with state saving in DataTables (scrolling position is saved)</li>
+ *     <li>Easy to use</li>
+ *   </ul>
+ *
+ *  @class
+ *  @constructor
+ *  @global
+ *  @param {object} dt DataTables settings object or API instance
+ *  @param {object} [opts={}] Configuration object for Scroller. Options 
+ *    are defined by {@link Scroller.defaults}
+ *
+ *  @requires jQuery 1.7+
+ *  @requires DataTables 1.10.0+
+ *
+ *  @example
+ *    $(document).ready(function() {
+ *        $('#example').DataTable( {
+ *            "scrollY": "200px",
+ *            "ajax": "media/dataset/large.txt",
+ *            "scroller": true,
+ *            "deferRender": true
+ *        } );
+ *    } );
+ */
+var Scroller = function ( dt, opts ) {
+	/* Sanity check - you just know it will happen */
+	if ( ! (this instanceof Scroller) ) {
+		alert( "Scroller warning: Scroller must be initialised with the 'new' keyword." );
+		return;
+	}
+
+	if ( opts === undefined ) {
+		opts = {};
+	}
+
+	var dtApi = $.fn.dataTable.Api( dt );
+
+	/**
+	 * Settings object which contains customisable information for the Scroller instance
+	 * @namespace
+	 * @private
+	 * @extends Scroller.defaults
+	 */
+	this.s = {
+		/**
+		 * DataTables settings object
+		 *  @type     object
+		 *  @default  Passed in as first parameter to constructor
+		 */
+		dt: dtApi.settings()[0],
+
+		/**
+		 * DataTables API instance
+		 *  @type     DataTable.Api
+		 */
+		dtApi: dtApi,
+
+		/**
+		 * Pixel location of the top of the drawn table in the viewport
+		 *  @type     int
+		 *  @default  0
+		 */
+		tableTop: 0,
+
+		/**
+		 * Pixel location of the bottom of the drawn table in the viewport
+		 *  @type     int
+		 *  @default  0
+		 */
+		tableBottom: 0,
+
+		/**
+		 * Pixel location of the boundary for when the next data set should be loaded and drawn
+		 * when scrolling up the way.
+		 *  @type     int
+		 *  @default  0
+		 *  @private
+		 */
+		redrawTop: 0,
+
+		/**
+		 * Pixel location of the boundary for when the next data set should be loaded and drawn
+		 * when scrolling down the way. Note that this is actually calculated as the offset from
+		 * the top.
+		 *  @type     int
+		 *  @default  0
+		 *  @private
+		 */
+		redrawBottom: 0,
+
+		/**
+		 * Auto row height or not indicator
+		 *  @type     bool
+		 *  @default  0
+		 */
+		autoHeight: true,
+
+		/**
+		 * Number of rows calculated as visible in the visible viewport
+		 *  @type     int
+		 *  @default  0
+		 */
+		viewportRows: 0,
+
+		/**
+		 * setTimeout reference for state saving, used when state saving is enabled in the DataTable
+		 * and when the user scrolls the viewport in order to stop the cookie set taking too much
+		 * CPU!
+		 *  @type     int
+		 *  @default  0
+		 */
+		stateTO: null,
+
+		stateSaveThrottle: function () {},
+
+		/**
+		 * setTimeout reference for the redraw, used when server-side processing is enabled in the
+		 * DataTables in order to prevent DoSing the server
+		 *  @type     int
+		 *  @default  null
+		 */
+		drawTO: null,
+
+		heights: {
+			jump: null,
+			page: null,
+			virtual: null,
+			scroll: null,
+
+			/**
+			 * Height of rows in the table
+			 *  @type     int
+			 *  @default  0
+			 */
+			row: null,
+
+			/**
+			 * Pixel height of the viewport
+			 *  @type     int
+			 *  @default  0
+			 */
+			viewport: null,
+			labelHeight: 0,
+			xbar: 0
+		},
+
+		topRowFloat: 0,
+		scrollDrawDiff: null,
+		loaderVisible: false,
+		forceReposition: false,
+		baseRowTop: 0,
+		baseScrollTop: 0,
+		mousedown: false,
+		lastScrollTop: 0
+	};
+
+	// @todo The defaults should extend a `c` property and the internal settings
+	// only held in the `s` property. At the moment they are mixed
+	this.s = $.extend( this.s, Scroller.oDefaults, opts );
+
+	// Workaround for row height being read from height object (see above comment)
+	this.s.heights.row = this.s.rowHeight;
+
+	/**
+	 * DOM elements used by the class instance
+	 * @private
+	 * @namespace
+	 *
+	 */
+	this.dom = {
+		"force":    document.createElement('div'),
+		"label":    $('<div class="dts_label">0</div>'),
+		"scroller": null,
+		"table":    null,
+		"loader":   null
+	};
+
+	// Attach the instance to the DataTables instance so it can be accessed in
+	// future. Don't initialise Scroller twice on the same table
+	if ( this.s.dt.oScroller ) {
+		return;
+	}
+
+	this.s.dt.oScroller = this;
+
+	/* Let's do it */
+	this.construct();
+};
+
+
+
+$.extend( Scroller.prototype, {
+	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+	 * Public methods - to be exposed via the DataTables API
+	 */
+
+	/**
+	 * Calculate and store information about how many rows are to be displayed
+	 * in the scrolling viewport, based on current dimensions in the browser's
+	 * rendering. This can be particularly useful if the table is initially
+	 * drawn in a hidden element - for example in a tab.
+	 *  @param {bool} [redraw=true] Redraw the table automatically after the recalculation, with
+	 *    the new dimensions forming the basis for the draw.
+	 *  @returns {void}
+	 */
+	measure: function ( redraw )
+	{
+		if ( this.s.autoHeight )
+		{
+			this._calcRowHeight();
+		}
+
+		var heights = this.s.heights;
+
+		if ( heights.row ) {
+			heights.viewport = this._parseHeight($(this.dom.scroller).css('max-height'));
+
+			this.s.viewportRows = parseInt( heights.viewport / heights.row, 10 )+1;
+			this.s.dt._iDisplayLength = this.s.viewportRows * this.s.displayBuffer;
+		}
+
+		var label = this.dom.label.outerHeight();
+		
+		heights.xbar = this.dom.scroller.offsetHeight - this.dom.scroller.clientHeight;
+		heights.labelHeight = label;
+
+		if ( redraw === undefined || redraw )
+		{
+			this.s.dt.oInstance.fnDraw( false );
+		}
+	},
+
+	/**
+	 * Get information about current displayed record range. This corresponds to
+	 * the information usually displayed in the "Info" block of the table.
+	 *
+	 * @returns {object} info as an object:
+	 *  {
+	 *      start: {int}, // the 0-indexed record at the top of the viewport
+	 *      end:   {int}, // the 0-indexed record at the bottom of the viewport
+	 *  }
+	*/
+	pageInfo: function()
+	{
+		var 
+			dt = this.s.dt,
+			iScrollTop = this.dom.scroller.scrollTop,
+			iTotal = dt.fnRecordsDisplay(),
+			iPossibleEnd = Math.ceil(this.pixelsToRow(iScrollTop + this.s.heights.viewport, false, this.s.ani));
+
+		return {
+			start: Math.floor(this.pixelsToRow(iScrollTop, false, this.s.ani)),
+			end: iTotal < iPossibleEnd ? iTotal-1 : iPossibleEnd-1
+		};
+	},
+
+	/**
+	 * Calculate the row number that will be found at the given pixel position
+	 * (y-scroll).
+	 *
+	 * Please note that when the height of the full table exceeds 1 million
+	 * pixels, Scroller switches into a non-linear mode for the scrollbar to fit
+	 * all of the records into a finite area, but this function returns a linear
+	 * value (relative to the last non-linear positioning).
+	 *  @param {int} pixels Offset from top to calculate the row number of
+	 *  @param {int} [intParse=true] If an integer value should be returned
+	 *  @param {int} [virtual=false] Perform the calculations in the virtual domain
+	 *  @returns {int} Row index
+	 */
+	pixelsToRow: function ( pixels, intParse, virtual )
+	{
+		var diff = pixels - this.s.baseScrollTop;
+		var row = virtual ?
+			(this._domain( 'physicalToVirtual', this.s.baseScrollTop ) + diff) / this.s.heights.row :
+			( diff / this.s.heights.row ) + this.s.baseRowTop;
+
+		return intParse || intParse === undefined ?
+			parseInt( row, 10 ) :
+			row;
+	},
+
+	/**
+	 * Calculate the pixel position from the top of the scrolling container for
+	 * a given row
+	 *  @param {int} iRow Row number to calculate the position of
+	 *  @returns {int} Pixels
+	 */
+	rowToPixels: function ( rowIdx, intParse, virtual )
+	{
+		var pixels;
+		var diff = rowIdx - this.s.baseRowTop;
+
+		if ( virtual ) {
+			pixels = this._domain( 'virtualToPhysical', this.s.baseScrollTop );
+			pixels += diff * this.s.heights.row;
+		}
+		else {
+			pixels = this.s.baseScrollTop;
+			pixels += diff * this.s.heights.row;
+		}
+
+		return intParse || intParse === undefined ?
+			parseInt( pixels, 10 ) :
+			pixels;
+	},
+
+
+	/**
+	 * Calculate the row number that will be found at the given pixel position (y-scroll)
+	 *  @param {int} row Row index to scroll to
+	 *  @param {bool} [animate=true] Animate the transition or not
+	 *  @returns {void}
+	 */
+	scrollToRow: function ( row, animate )
+	{
+		var that = this;
+		var ani = false;
+		var px = this.rowToPixels( row );
+
+		// We need to know if the table will redraw or not before doing the
+		// scroll. If it will not redraw, then we need to use the currently
+		// displayed table, and scroll with the physical pixels. Otherwise, we
+		// need to calculate the table's new position from the virtual
+		// transform.
+		var preRows = ((this.s.displayBuffer-1)/2) * this.s.viewportRows;
+		var drawRow = row - preRows;
+		if ( drawRow < 0 ) {
+			drawRow = 0;
+		}
+
+		if ( (px > this.s.redrawBottom || px < this.s.redrawTop) && this.s.dt._iDisplayStart !== drawRow ) {
+			ani = true;
+			px = this._domain( 'virtualToPhysical', row * this.s.heights.row );
+
+			// If we need records outside the current draw region, but the new
+			// scrolling position is inside that (due to the non-linear nature
+			// for larger numbers of records), we need to force position update.
+			if ( this.s.redrawTop < px && px < this.s.redrawBottom ) {
+				this.s.forceReposition = true;
+				animate = false;
+			}
+		}
+
+		if ( animate === undefined || animate )
+		{
+			this.s.ani = ani;
+			$(this.dom.scroller).animate( {
+				"scrollTop": px
+			}, function () {
+				// This needs to happen after the animation has completed and
+				// the final scroll event fired
+				setTimeout( function () {
+					that.s.ani = false;
+				}, 250 );
+			} );
+		}
+		else
+		{
+			$(this.dom.scroller).scrollTop( px );
+		}
+	},
+
+
+	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+	 * Constructor
+	 */
+
+	/**
+	 * Initialisation for Scroller
+	 *  @returns {void}
+	 *  @private
+	 */
+	construct: function ()
+	{
+		var that = this;
+		var dt = this.s.dtApi;
+
+		/* Sanity check */
+		if ( !this.s.dt.oFeatures.bPaginate ) {
+			this.s.dt.oApi._fnLog( this.s.dt, 0, 'Pagination must be enabled for Scroller' );
+			return;
+		}
+
+		/* Insert a div element that we can use to force the DT scrolling container to
+		 * the height that would be required if the whole table was being displayed
+		 */
+		this.dom.force.style.position = "relative";
+		this.dom.force.style.top = "0px";
+		this.dom.force.style.left = "0px";
+		this.dom.force.style.width = "1px";
+
+		this.dom.scroller = $('div.'+this.s.dt.oClasses.sScrollBody, this.s.dt.nTableWrapper)[0];
+		this.dom.scroller.appendChild( this.dom.force );
+		this.dom.scroller.style.position = "relative";
+
+		this.dom.table = $('>table', this.dom.scroller)[0];
+		this.dom.table.style.position = "absolute";
+		this.dom.table.style.top = "0px";
+		this.dom.table.style.left = "0px";
+
+		// Add class to 'announce' that we are a Scroller table
+		$(dt.table().container()).addClass('dts DTS');
+
+		// Add a 'loading' indicator
+		if ( this.s.loadingIndicator )
+		{
+			this.dom.loader = $('<div class="dataTables_processing dts_loading">'+this.s.dt.oLanguage.sLoadingRecords+'</div>')
+				.css('display', 'none');
+
+			$(this.dom.scroller.parentNode)
+				.css('position', 'relative')
+				.append( this.dom.loader );
+		}
+
+		this.dom.label.appendTo(this.dom.scroller);
+
+		/* Initial size calculations */
+		if ( this.s.heights.row && this.s.heights.row != 'auto' )
+		{
+			this.s.autoHeight = false;
+		}
+
+		// Scrolling callback to see if a page change is needed
+		this.s.ingnoreScroll = true;
+		$(this.dom.scroller).on( 'scroll.dt-scroller', function (e) {
+			that._scroll.call( that );
+		} );
+
+		// In iOS we catch the touchstart event in case the user tries to scroll
+		// while the display is already scrolling
+		$(this.dom.scroller).on('touchstart.dt-scroller', function () {
+			that._scroll.call( that );
+		} );
+
+		$(this.dom.scroller)
+			.on('mousedown.dt-scroller', function () {
+				that.s.mousedown = true;
+			})
+			.on('mouseup.dt-scroller', function () {
+				that.s.labelVisible = false;
+				that.s.mousedown = false;
+				that.dom.label.css('display', 'none');
+			});
+
+		// On resize, update the information element, since the number of rows shown might change
+		$(window).on( 'resize.dt-scroller', function () {
+			that.measure( false );
+			that._info();
+		} );
+
+		// Add a state saving parameter to the DT state saving so we can restore the exact
+		// position of the scrolling.
+		var initialStateSave = true;
+		var loadedState = dt.state.loaded();
+
+		dt.on( 'stateSaveParams.scroller', function ( e, settings, data ) {
+			if ( initialStateSave && loadedState ) {
+				data.scroller = loadedState.scroller;
+				initialStateSave = false;
+			}
+			else {
+				// Need to used the saved position on init
+				data.scroller = {
+					topRow: that.s.topRowFloat,
+					baseScrollTop: that.s.baseScrollTop,
+					baseRowTop: that.s.baseRowTop,
+					scrollTop: that.s.lastScrollTop
+				};
+			}
+		} );
+
+		if ( loadedState && loadedState.scroller ) {
+			this.s.topRowFloat = loadedState.scroller.topRow;
+			this.s.baseScrollTop = loadedState.scroller.baseScrollTop;
+			this.s.baseRowTop = loadedState.scroller.baseRowTop;
+		}
+
+		this.measure( false );
+	
+		that.s.stateSaveThrottle = that.s.dt.oApi._fnThrottle( function () {
+			that.s.dtApi.state.save();
+		}, 500 );
+
+		dt.on( 'init.scroller', function () {
+			that.measure( false );
+
+			// Setting to `jump` will instruct _draw to calculate the scroll top
+			// position
+			that.s.scrollType = 'jump';
+			that._draw();
+
+			// Update the scroller when the DataTable is redrawn
+			dt.on( 'draw.scroller', function () {
+				that._draw();
+			});
+		} );
+
+		// Set height before the draw happens, allowing everything else to update
+		// on draw complete without worry for roder.
+		dt.on( 'preDraw.dt.scroller', function () {
+			that._scrollForce();
+		} );
+
+		// Destructor
+		dt.on( 'destroy.scroller', function () {
+			$(window).off( 'resize.dt-scroller' );
+			$(that.dom.scroller).off('.dt-scroller');
+			$(that.s.dt.nTable).off( '.scroller' );
+
+			$(that.s.dt.nTableWrapper).removeClass('DTS');
+			$('div.DTS_Loading', that.dom.scroller.parentNode).remove();
+
+			that.dom.table.style.position = "";
+			that.dom.table.style.top = "";
+			that.dom.table.style.left = "";
+		} );
+	},
+
+
+	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+	 * Private methods
+	 */
+
+	/**
+	 * Automatic calculation of table row height. This is just a little tricky here as using
+	 * initialisation DataTables has tale the table out of the document, so we need to create
+	 * a new table and insert it into the document, calculate the row height and then whip the
+	 * table out.
+	 *  @returns {void}
+	 *  @private
+	 */
+	_calcRowHeight: function ()
+	{
+		var dt = this.s.dt;
+		var origTable = dt.nTable;
+		var nTable = origTable.cloneNode( false );
+		var tbody = $('<tbody/>').appendTo( nTable );
+		var container = $(
+			'<div class="'+dt.oClasses.sWrapper+' DTS">'+
+				'<div class="'+dt.oClasses.sScrollWrapper+'">'+
+					'<div class="'+dt.oClasses.sScrollBody+'"></div>'+
+				'</div>'+
+			'</div>'
+		);
+
+		// Want 3 rows in the sizing table so :first-child and :last-child
+		// CSS styles don't come into play - take the size of the middle row
+		$('tbody tr:lt(4)', origTable).clone().appendTo( tbody );
+        var rowsCount = $('tr', tbody).length;
+
+        if ( rowsCount === 1 ) {
+            tbody.prepend('<tr><td>&#160;</td></tr>');
+            tbody.append('<tr><td>&#160;</td></tr>');
+		}
+		else {
+            for (; rowsCount < 3; rowsCount++) {
+                tbody.append('<tr><td>&#160;</td></tr>');
+            }
+		}
+	
+		$('div.'+dt.oClasses.sScrollBody, container).append( nTable );
+
+		// If initialised using `dom`, use the holding element as the insert point
+		var insertEl = this.s.dt.nHolding || origTable.parentNode;
+
+		if ( ! $(insertEl).is(':visible') ) {
+			insertEl = 'body';
+		}
+
+		// Remove form element links as they might select over others (particularly radio and checkboxes)
+		container.find("input").removeAttr("name");
+
+		container.appendTo( insertEl );
+		this.s.heights.row = $('tr', tbody).eq(1).outerHeight();
+
+		container.remove();
+	},
+
+	/**
+	 * Draw callback function which is fired when the DataTable is redrawn. The main function of
+	 * this method is to position the drawn table correctly the scrolling container for the rows
+	 * that is displays as a result of the scrolling position.
+	 *  @returns {void}
+	 *  @private
+	 */
+	_draw: function ()
+	{
+		var
+			that = this,
+			heights = this.s.heights,
+			iScrollTop = this.dom.scroller.scrollTop,
+			iTableHeight = $(this.s.dt.nTable).height(),
+			displayStart = this.s.dt._iDisplayStart,
+			displayLen = this.s.dt._iDisplayLength,
+			displayEnd = this.s.dt.fnRecordsDisplay();
+
+		// Disable the scroll event listener while we are updating the DOM
+		this.s.skip = true;
+
+		// If paging is reset
+		if ( (this.s.dt.bSorted || this.s.dt.bFiltered) && displayStart === 0 && !this.s.dt._drawHold ) {
+			this.s.topRowFloat = 0;
+		}
+
+		iScrollTop = this.s.scrollType === 'jump' ?
+			this._domain( 'virtualToPhysical', this.s.topRowFloat * heights.row ) :
+			iScrollTop;
+
+		// Store positional information so positional calculations can be based
+		// upon the current table draw position
+		this.s.baseScrollTop = iScrollTop;
+		this.s.baseRowTop = this.s.topRowFloat;
+
+		// Position the table in the virtual scroller
+		var tableTop = iScrollTop - ((this.s.topRowFloat - displayStart) * heights.row);
+		if ( displayStart === 0 ) {
+			tableTop = 0;
+		}
+		else if ( displayStart + displayLen >= displayEnd ) {
+			tableTop = heights.scroll - iTableHeight;
+		}
+
+		this.dom.table.style.top = tableTop+'px';
+
+		/* Cache some information for the scroller */
+		this.s.tableTop = tableTop;
+		this.s.tableBottom = iTableHeight + this.s.tableTop;
+
+		// Calculate the boundaries for where a redraw will be triggered by the
+		// scroll event listener
+		var boundaryPx = (iScrollTop - this.s.tableTop) * this.s.boundaryScale;
+		this.s.redrawTop = iScrollTop - boundaryPx;
+		this.s.redrawBottom = iScrollTop + boundaryPx > heights.scroll - heights.viewport - heights.row ?
+			heights.scroll - heights.viewport - heights.row :
+			iScrollTop + boundaryPx;
+
+		this.s.skip = false;
+
+		// Restore the scrolling position that was saved by DataTable's state
+		// saving Note that this is done on the second draw when data is Ajax
+		// sourced, and the first draw when DOM soured
+		if ( this.s.dt.oFeatures.bStateSave && this.s.dt.oLoadedState !== null &&
+			 typeof this.s.dt.oLoadedState.scroller != 'undefined' )
+		{
+			// A quirk of DataTables is that the draw callback will occur on an
+			// empty set if Ajax sourced, but not if server-side processing.
+			var ajaxSourced = (this.s.dt.sAjaxSource || that.s.dt.ajax) && ! this.s.dt.oFeatures.bServerSide ?
+				true :
+				false;
+
+			if ( ( ajaxSourced && this.s.dt.iDraw == 2) ||
+			     (!ajaxSourced && this.s.dt.iDraw == 1) )
+			{
+				setTimeout( function () {
+					$(that.dom.scroller).scrollTop( that.s.dt.oLoadedState.scroller.scrollTop );
+
+					// In order to prevent layout thrashing we need another
+					// small delay
+					setTimeout( function () {
+						that.s.ingnoreScroll = false;
+					}, 0 );
+				}, 0 );
+			}
+		}
+		else {
+			that.s.ingnoreScroll = false;
+		}
+
+		// Because of the order of the DT callbacks, the info update will
+		// take precedence over the one we want here. So a 'thread' break is
+		// needed.  Only add the thread break if bInfo is set
+		if ( this.s.dt.oFeatures.bInfo ) {
+			setTimeout( function () {
+				that._info.call( that );
+			}, 0 );
+		}
+
+		$(this.s.dt.nTable).triggerHandler('position.dts.dt', tableTop);
+
+		// Hide the loading indicator
+		if ( this.dom.loader && this.s.loaderVisible ) {
+			this.dom.loader.css( 'display', 'none' );
+			this.s.loaderVisible = false;
+		}
+	},
+
+	/**
+	 * Convert from one domain to another. The physical domain is the actual
+	 * pixel count on the screen, while the virtual is if we had browsers which
+	 * had scrolling containers of infinite height (i.e. the absolute value)
+	 *
+	 *  @param {string} dir Domain transform direction, `virtualToPhysical` or
+	 *    `physicalToVirtual` 
+	 *  @returns {number} Calculated transform
+	 *  @private
+	 */
+	_domain: function ( dir, val )
+	{
+		var heights = this.s.heights;
+		var diff;
+		var magic = 10000; // the point at which the non-linear calculations start to happen
+
+		// If the virtual and physical height match, then we use a linear
+		// transform between the two, allowing the scrollbar to be linear
+		if ( heights.virtual === heights.scroll ) {
+			return val;
+		}
+
+		// In the first 10k pixels and the last 10k pixels, we want the scrolling
+		// to be linear. After that it can be non-linear. It would be unusual for
+		// anyone to mouse wheel through that much.
+		if ( val < magic ) {
+			return val;
+		}
+		else if ( dir === 'virtualToPhysical' && val >= heights.virtual - magic ) {
+			diff = heights.virtual - val;
+			return heights.scroll - diff;
+		}
+		else if ( dir === 'physicalToVirtual' && val >= heights.scroll - magic ) {
+			diff = heights.scroll - val;
+			return heights.virtual - diff;
+		}
+
+		// Otherwise, we want a non-linear scrollbar to take account of the
+		// redrawing regions at the start and end of the table, otherwise these
+		// can stutter badly - on large tables 30px (for example) scroll might
+		// be hundreds of rows, so the table would be redrawing every few px at
+		// the start and end. Use a simple linear eq. to stop this, effectively
+		// causing a kink in the scrolling ratio. It does mean the scrollbar is
+		// non-linear, but with such massive data sets, the scrollbar is going
+		// to be a best guess anyway
+		var m = (heights.virtual - magic - magic) / (heights.scroll - magic - magic);
+		var c = magic - (m*magic);
+
+		return dir === 'virtualToPhysical' ?
+			(val-c) / m :
+			(m*val) + c;
+	},
+
+	/**
+	 * Update any information elements that are controlled by the DataTable based on the scrolling
+	 * viewport and what rows are visible in it. This function basically acts in the same way as
+	 * _fnUpdateInfo in DataTables, and effectively replaces that function.
+	 *  @returns {void}
+	 *  @private
+	 */
+	_info: function ()
+	{
+		if ( !this.s.dt.oFeatures.bInfo )
+		{
+			return;
+		}
+
+		var
+			dt = this.s.dt,
+			language = dt.oLanguage,
+			iScrollTop = this.dom.scroller.scrollTop,
+			iStart = Math.floor( this.pixelsToRow(iScrollTop, false, this.s.ani)+1 ),
+			iMax = dt.fnRecordsTotal(),
+			iTotal = dt.fnRecordsDisplay(),
+			iPossibleEnd = Math.ceil( this.pixelsToRow(iScrollTop+this.s.heights.viewport, false, this.s.ani) ),
+			iEnd = iTotal < iPossibleEnd ? iTotal : iPossibleEnd,
+			sStart = dt.fnFormatNumber( iStart ),
+			sEnd = dt.fnFormatNumber( iEnd ),
+			sMax = dt.fnFormatNumber( iMax ),
+			sTotal = dt.fnFormatNumber( iTotal ),
+			sOut;
+
+		if ( dt.fnRecordsDisplay() === 0 &&
+			   dt.fnRecordsDisplay() == dt.fnRecordsTotal() )
+		{
+			/* Empty record set */
+			sOut = language.sInfoEmpty+ language.sInfoPostFix;
+		}
+		else if ( dt.fnRecordsDisplay() === 0 )
+		{
+			/* Empty record set after filtering */
+			sOut = language.sInfoEmpty +' '+
+				language.sInfoFiltered.replace('_MAX_', sMax)+
+					language.sInfoPostFix;
+		}
+		else if ( dt.fnRecordsDisplay() == dt.fnRecordsTotal() )
+		{
+			/* Normal record set */
+			sOut = language.sInfo.
+					replace('_START_', sStart).
+					replace('_END_',   sEnd).
+					replace('_MAX_',   sMax).
+					replace('_TOTAL_', sTotal)+
+				language.sInfoPostFix;
+		}
+		else
+		{
+			/* Record set after filtering */
+			sOut = language.sInfo.
+					replace('_START_', sStart).
+					replace('_END_',   sEnd).
+					replace('_MAX_',   sMax).
+					replace('_TOTAL_', sTotal) +' '+
+				language.sInfoFiltered.replace(
+					'_MAX_',
+					dt.fnFormatNumber(dt.fnRecordsTotal())
+				)+
+				language.sInfoPostFix;
+		}
+
+		var callback = language.fnInfoCallback;
+		if ( callback ) {
+			sOut = callback.call( dt.oInstance,
+				dt, iStart, iEnd, iMax, iTotal, sOut
+			);
+		}
+
+		var n = dt.aanFeatures.i;
+		if ( typeof n != 'undefined' )
+		{
+			for ( var i=0, iLen=n.length ; i<iLen ; i++ )
+			{
+				$(n[i]).html( sOut );
+			}
+		}
+
+		// DT doesn't actually (yet) trigger this event, but it will in future
+		$(dt.nTable).triggerHandler( 'info.dt' );
+	},
+
+	/**
+	 * Parse CSS height property string as number
+	 *
+	 * An attempt is made to parse the string as a number. Currently supported units are 'px',
+	 * 'vh', and 'rem'. 'em' is partially supported; it works as long as the parent element's
+	 * font size matches the body element. Zero is returned for unrecognized strings.
+	 *  @param {string} cssHeight CSS height property string
+	 *  @returns {number} height
+	 *  @private
+	 */
+	_parseHeight: function(cssHeight) {
+		var height;
+		var matches = /^([+-]?(?:\d+(?:\.\d+)?|\.\d+))(px|em|rem|vh)$/.exec(cssHeight);
+
+		if (matches === null) {
+			return 0;
+		}
+
+		var value = parseFloat(matches[1]);
+		var unit = matches[2];
+
+		if ( unit === 'px' ) {
+			height = value;
+		}
+		else if ( unit === 'vh' ) {
+			height = ( value / 100 ) * $(window).height();
+		}
+		else if ( unit === 'rem' ) {
+			height = value * parseFloat($(':root').css('font-size'));
+		}
+		else if ( unit === 'em' ) {
+			height = value * parseFloat($('body').css('font-size'));
+		}
+
+		return height ?
+			height :
+			0;
+	},
+
+	/**
+	 * Scrolling function - fired whenever the scrolling position is changed.
+	 * This method needs to use the stored values to see if the table should be
+	 * redrawn as we are moving towards the end of the information that is
+	 * currently drawn or not. If needed, then it will redraw the table based on
+	 * the new position.
+	 *  @returns {void}
+	 *  @private
+	 */
+	_scroll: function ()
+	{
+		var
+			that = this,
+			heights = this.s.heights,
+			iScrollTop = this.dom.scroller.scrollTop,
+			iTopRow;
+
+		if ( this.s.skip ) {
+			return;
+		}
+
+		if ( this.s.ingnoreScroll ) {
+			return;
+		}
+
+		if ( iScrollTop === this.s.lastScrollTop ) {
+			return;
+		}
+
+		/* If the table has been sorted or filtered, then we use the redraw that
+		 * DataTables as done, rather than performing our own
+		 */
+		if ( this.s.dt.bFiltered || this.s.dt.bSorted ) {
+			this.s.lastScrollTop = 0;
+			return;
+		}
+
+		/* Update the table's information display for what is now in the viewport */
+		this._info();
+
+		/* We don't want to state save on every scroll event - that's heavy
+		 * handed, so use a timeout to update the state saving only when the
+		 * scrolling has finished
+		 */
+		clearTimeout( this.s.stateTO );
+		this.s.stateTO = setTimeout( function () {
+			that.s.dtApi.state.save();
+		}, 250 );
+
+		this.s.scrollType = Math.abs(iScrollTop - this.s.lastScrollTop) > heights.viewport ?
+			'jump' :
+			'cont';
+
+		this.s.topRowFloat = this.s.scrollType === 'cont' ?
+			this.pixelsToRow( iScrollTop, false, false ) :
+			this._domain( 'physicalToVirtual', iScrollTop ) / heights.row;
+
+		if ( this.s.topRowFloat < 0 ) {
+			this.s.topRowFloat = 0;
+		}
+
+		/* Check if the scroll point is outside the trigger boundary which would required
+		 * a DataTables redraw
+		 */
+		if ( this.s.forceReposition || iScrollTop < this.s.redrawTop || iScrollTop > this.s.redrawBottom ) {
+			var preRows = Math.ceil( ((this.s.displayBuffer-1)/2) * this.s.viewportRows );
+
+			iTopRow = parseInt(this.s.topRowFloat, 10) - preRows;
+			this.s.forceReposition = false;
+
+			if ( iTopRow <= 0 ) {
+				/* At the start of the table */
+				iTopRow = 0;
+			}
+			else if ( iTopRow + this.s.dt._iDisplayLength > this.s.dt.fnRecordsDisplay() ) {
+				/* At the end of the table */
+				iTopRow = this.s.dt.fnRecordsDisplay() - this.s.dt._iDisplayLength;
+				if ( iTopRow < 0 ) {
+					iTopRow = 0;
+				}
+			}
+			else if ( iTopRow % 2 !== 0 ) {
+				// For the row-striping classes (odd/even) we want only to start
+				// on evens otherwise the stripes will change between draws and
+				// look rubbish
+				iTopRow++;
+			}
+
+			// Store calcuated value, in case the following condition is not met, but so
+			// that the draw function will still use it.
+			this.s.targetTop = iTopRow;
+
+			if ( iTopRow != this.s.dt._iDisplayStart ) {
+				/* Cache the new table position for quick lookups */
+				this.s.tableTop = $(this.s.dt.nTable).offset().top;
+				this.s.tableBottom = $(this.s.dt.nTable).height() + this.s.tableTop;
+
+				var draw = function () {
+					that.s.dt._iDisplayStart = that.s.targetTop;
+					that.s.dt.oApi._fnDraw( that.s.dt );
+				};
+
+				/* Do the DataTables redraw based on the calculated start point - note that when
+				 * using server-side processing we introduce a small delay to not DoS the server...
+				 */
+				if ( this.s.dt.oFeatures.bServerSide ) {
+					this.s.forceReposition = true;
+
+					clearTimeout( this.s.drawTO );
+					this.s.drawTO = setTimeout( draw, this.s.serverWait );
+				}
+				else {
+					draw();
+				}
+
+				if ( this.dom.loader && ! this.s.loaderVisible ) {
+					this.dom.loader.css( 'display', 'block' );
+					this.s.loaderVisible = true;
+				}
+			}
+		}
+		else {
+			this.s.topRowFloat = this.pixelsToRow( iScrollTop, false, true );
+		}
+
+		this.s.lastScrollTop = iScrollTop;
+		this.s.stateSaveThrottle();
+
+		if ( this.s.scrollType === 'jump' && this.s.mousedown ) {
+			this.s.labelVisible = true;
+		}
+		if (this.s.labelVisible) {
+			var labelFactor = (heights.viewport-heights.labelHeight - heights.xbar) / heights.scroll;
+
+			this.dom.label
+				.html( this.s.dt.fnFormatNumber( parseInt( this.s.topRowFloat, 10 )+1 ) )
+				.css( 'top', iScrollTop + (iScrollTop * labelFactor) )
+				.css( 'display', 'block' );
+		}
+	},
+
+	/**
+	 * Force the scrolling container to have height beyond that of just the
+	 * table that has been drawn so the user can scroll the whole data set.
+	 *
+	 * Note that if the calculated required scrolling height exceeds a maximum
+	 * value (1 million pixels - hard-coded) the forcing element will be set
+	 * only to that maximum value and virtual / physical domain transforms will
+	 * be used to allow Scroller to display tables of any number of records.
+	 *  @returns {void}
+	 *  @private
+	 */
+	_scrollForce: function ()
+	{
+		var heights = this.s.heights;
+		var max = 1000000;
+
+		heights.virtual = heights.row * this.s.dt.fnRecordsDisplay();
+		heights.scroll = heights.virtual;
+
+		if ( heights.scroll > max ) {
+			heights.scroll = max;
+		}
+
+		// Minimum height so there is always a row visible (the 'no rows found'
+		// if reduced to zero filtering)
+		this.dom.force.style.height = heights.scroll > this.s.heights.row ?
+			heights.scroll+'px' :
+			this.s.heights.row+'px';
+	}
+} );
+
+
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Statics
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+
+/**
+ * Scroller default settings for initialisation
+ *  @namespace
+ *  @name Scroller.defaults
+ *  @static
+ */
+Scroller.defaults = {
+	/**
+	 * Scroller uses the boundary scaling factor to decide when to redraw the table - which it
+	 * typically does before you reach the end of the currently loaded data set (in order to
+	 * allow the data to look continuous to a user scrolling through the data). If given as 0
+	 * then the table will be redrawn whenever the viewport is scrolled, while 1 would not
+	 * redraw the table until the currently loaded data has all been shown. You will want
+	 * something in the middle - the default factor of 0.5 is usually suitable.
+	 *  @type     float
+	 *  @default  0.5
+	 *  @static
+	 */
+	boundaryScale: 0.5,
+
+	/**
+	 * The display buffer is what Scroller uses to calculate how many rows it should pre-fetch
+	 * for scrolling. Scroller automatically adjusts DataTables' display length to pre-fetch
+	 * rows that will be shown in "near scrolling" (i.e. just beyond the current display area).
+	 * The value is based upon the number of rows that can be displayed in the viewport (i.e.
+	 * a value of 1), and will apply the display range to records before before and after the
+	 * current viewport - i.e. a factor of 3 will allow Scroller to pre-fetch 1 viewport's worth
+	 * of rows before the current viewport, the current viewport's rows and 1 viewport's worth
+	 * of rows after the current viewport. Adjusting this value can be useful for ensuring
+	 * smooth scrolling based on your data set.
+	 *  @type     int
+	 *  @default  7
+	 *  @static
+	 */
+	displayBuffer: 9,
+
+	/**
+	 * Show (or not) the loading element in the background of the table. Note that you should
+	 * include the dataTables.scroller.css file for this to be displayed correctly.
+	 *  @type     boolean
+	 *  @default  false
+	 *  @static
+	 */
+	loadingIndicator: false,
+
+	/**
+	 * Scroller will attempt to automatically calculate the height of rows for it's internal
+	 * calculations. However the height that is used can be overridden using this parameter.
+	 *  @type     int|string
+	 *  @default  auto
+	 *  @static
+	 */
+	rowHeight: "auto",
+
+	/**
+	 * When using server-side processing, Scroller will wait a small amount of time to allow
+	 * the scrolling to finish before requesting more data from the server. This prevents
+	 * you from DoSing your own server! The wait time can be configured by this parameter.
+	 *  @type     int
+	 *  @default  200
+	 *  @static
+	 */
+	serverWait: 200
+};
+
+Scroller.oDefaults = Scroller.defaults;
+
+
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Constants
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/**
+ * Scroller version
+ *  @type      String
+ *  @default   See code
+ *  @name      Scroller.version
+ *  @static
+ */
+Scroller.version = "2.0.5";
+
+
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Initialisation
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+// Attach a listener to the document which listens for DataTables initialisation
+// events so we can automatically initialise
+$(document).on( 'preInit.dt.dtscroller', function (e, settings) {
+	if ( e.namespace !== 'dt' ) {
+		return;
+	}
+
+	var init = settings.oInit.scroller;
+	var defaults = DataTable.defaults.scroller;
+
+	if ( init || defaults ) {
+		var opts = $.extend( {}, init, defaults );
+
+		if ( init !== false ) {
+			new Scroller( settings, opts  );
+		}
+	}
+} );
+
+
+// Attach Scroller to DataTables so it can be accessed as an 'extra'
+$.fn.dataTable.Scroller = Scroller;
+$.fn.DataTable.Scroller = Scroller;
+
+
+// DataTables 1.10 API method aliases
+var Api = $.fn.dataTable.Api;
+
+Api.register( 'scroller()', function () {
+	return this;
+} );
+
+// Undocumented and deprecated - is it actually useful at all?
+Api.register( 'scroller().rowToPixels()', function ( rowIdx, intParse, virtual ) {
+	var ctx = this.context;
+
+	if ( ctx.length && ctx[0].oScroller ) {
+		return ctx[0].oScroller.rowToPixels( rowIdx, intParse, virtual );
+	}
+	// undefined
+} );
+
+// Undocumented and deprecated - is it actually useful at all?
+Api.register( 'scroller().pixelsToRow()', function ( pixels, intParse, virtual ) {
+	var ctx = this.context;
+
+	if ( ctx.length && ctx[0].oScroller ) {
+		return ctx[0].oScroller.pixelsToRow( pixels, intParse, virtual );
+	}
+	// undefined
+} );
+
+// `scroller().scrollToRow()` is undocumented and deprecated. Use `scroller.toPosition()
+Api.register( ['scroller().scrollToRow()', 'scroller.toPosition()'], function ( idx, ani ) {
+	this.iterator( 'table', function ( ctx ) {
+		if ( ctx.oScroller ) {
+			ctx.oScroller.scrollToRow( idx, ani );
+		}
+	} );
+
+	return this;
+} );
+
+Api.register( 'row().scrollTo()', function ( ani ) {
+	var that = this;
+
+	this.iterator( 'row', function ( ctx, rowIdx ) {
+		if ( ctx.oScroller ) {
+			var displayIdx = that
+				.rows( { order: 'applied', search: 'applied' } )
+				.indexes()
+				.indexOf( rowIdx );
+
+			ctx.oScroller.scrollToRow( displayIdx, ani );
+		}
+	} );
+
+	return this;
+} );
+
+Api.register( 'scroller.measure()', function ( redraw ) {
+	this.iterator( 'table', function ( ctx ) {
+		if ( ctx.oScroller ) {
+			ctx.oScroller.measure( redraw );
+		}
+	} );
+
+	return this;
+} );
+
+Api.register( 'scroller.page()', function() {
+	var ctx = this.context;
+
+	if ( ctx.length && ctx[0].oScroller ) {
+		return ctx[0].oScroller.pageInfo();
+	}
+	// undefined
+} );
+
+return Scroller;
+}));