--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DataTables-1.9.4/extras/KeyTable/js/KeyTable.js	Tue Jul 01 11:42:23 2014 -0400
@@ -0,0 +1,1111 @@
+/*
+ * File:        KeyTable.js
+ * Version:     1.1.7
+ * CVS:         $Idj$
+ * Description: Keyboard navigation for HTML tables
+ * Author:      Allan Jardine (www.sprymedia.co.uk)
+ * Created:     Fri Mar 13 21:24:02 GMT 2009
+ * Modified:    $Date$ by $Author$
+ * Language:    Javascript
+ * License:     GPL v2 or BSD 3 point style
+ * Project:     Just a little bit of fun :-)
+ * Contact:     www.sprymedia.co.uk/contact
+ * 
+ * Copyright 2009-2011 Allan Jardine, all rights reserved.
+ *
+ * This source file is free software, under either the GPL v2 license or a
+ * BSD style license, available at:
+ *   http://datatables.net/license_gpl2
+ *   http://datatables.net/license_bsd
+ */
+
+
+function KeyTable ( oInit )
+{
+	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+	 * API parameters
+	 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+	
+	/*
+	 * Variable: block
+	 * Purpose:  Flag whether or not KeyTable events should be processed
+	 * Scope:    KeyTable - public
+	 */
+	this.block = false;
+	
+	/*
+	 * Variable: event
+	 * Purpose:  Container for all event application methods
+	 * Scope:    KeyTable - public
+	 * Notes:    This object contains all the public methods for adding and removing events - these
+	 *           are dynamically added later on
+	 */
+	this.event = {
+		"remove": {}
+	};
+	
+	
+	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+	 * API methods
+	 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+	
+	/*
+	 * Function: fnGetCurrentPosition
+	 * Purpose:  Get the currently focused cell's position
+	 * Returns:  array int: [ x, y ]
+	 * Inputs:   void
+	 */
+	this.fnGetCurrentPosition = function ()
+	{
+		return [ _iOldX, _iOldY ];
+	};
+	
+	
+	/*
+	 * Function: fnGetCurrentData
+	 * Purpose:  Get the currently focused cell's data (innerHTML)
+	 * Returns:  string: - data requested
+	 * Inputs:   void
+	 */
+	this.fnGetCurrentData = function ()
+	{
+		return _nOldFocus.innerHTML;
+	};
+	
+	
+	/*
+	 * Function: fnGetCurrentTD
+	 * Purpose:  Get the currently focused cell
+	 * Returns:  node: - focused element
+	 * Inputs:   void
+	 */
+	this.fnGetCurrentTD = function ()
+	{
+		return _nOldFocus;
+	};
+	
+	
+	/*
+	 * Function: fnSetPosition
+	 * Purpose:  Set the position of the focused cell
+	 * Returns:  -
+	 * Inputs:   int:x - x coordinate
+	 *           int:y - y coordinate
+	 * Notes:    Thanks to Rohan Daxini for the basis of this function
+	 */
+	this.fnSetPosition = function( x, y )
+	{
+		if ( typeof x == 'object' && x.nodeName )
+		{
+			_fnSetFocus( x );
+		}
+		else
+		{
+			_fnSetFocus( _fnCellFromCoords(x, y) );
+		}
+	};
+	
+	
+	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+	 * Private parameters
+	 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+	
+	/*
+	 * Variable: _nBody
+	 * Purpose:  Body node of the table - cached for renference
+	 * Scope:    KeyTable - private
+	 */
+	var _nBody = null;
+	
+	/*
+	 * Variable: 
+	 * Purpose:  
+	 * Scope:    KeyTable - private
+	 */
+	var _nOldFocus = null;
+	
+	/*
+	 * Variable: _iOldX and _iOldY
+	 * Purpose:  X and Y coords of the old elemet that was focused on
+	 * Scope:    KeyTable - private
+	 */
+	var _iOldX = null;
+	var _iOldY = null;
+	
+	/*
+	 * Variable: _that
+	 * Purpose:  Scope saving for 'this' after a jQuery event
+	 * Scope:    KeyTable - private
+	 */
+	var _that = null;
+	
+	/*
+	 * Variable: sFocusClass
+	 * Purpose:  Class that should be used for focusing on a cell
+	 * Scope:    KeyTable - private
+	 */
+	var _sFocusClass = "focus";
+	
+	/*
+	 * Variable: _bKeyCapture
+	 * Purpose:  Flag for should KeyTable capture key events or not
+	 * Scope:    KeyTable - private
+	 */
+	var _bKeyCapture = false;
+	
+	/*
+	 * Variable: _oaoEvents
+	 * Purpose:  Event cache object, one array for each supported event for speed of searching
+	 * Scope:    KeyTable - private
+	 */
+	var _oaoEvents = {
+		"action": [],
+		"esc": [],
+		"focus": [],
+		"blur": []
+	};
+	
+	/*
+	 * Variable: _oDatatable
+	 * Purpose:  DataTables object for if we are actually using a DataTables table
+	 * Scope:    KeyTable - private
+	 */
+	var _oDatatable = null;
+	
+	var _bForm;
+	var _nInput;
+	var _bInputFocused = false;
+	
+	
+	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+	 * Private methods
+	 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+	
+	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+	 * Key table events
+	 */
+	
+	/*
+	 * Function: _fnEventAddTemplate
+	 * Purpose:  Create a function (with closure for sKey) event addition API
+	 * Returns:  function: - template function
+	 * Inputs:   string:sKey - type of event to detect
+	 */
+	function _fnEventAddTemplate( sKey )
+	{
+		/*
+		 * Function: -
+		 * Purpose:  API function for adding event to cache
+		 * Returns:  -
+		 * Inputs:   1. node:x - target node to add event for
+		 *           2. function:y - callback function to apply
+		 *         or
+		 *           1. int:x - x coord. of target cell (can be null for live events)
+		 *           2. int:y - y coord. of target cell (can be null for live events)
+		 *           3. function:z - callback function to apply
+		 * Notes:    This function is (interally) overloaded (in as much as javascript allows for
+		 *           that) - the target cell can be given by either node or coords.
+		 */
+		return function ( x, y, z ) {
+			if ( (x===null || typeof x == "number") && 
+			     (y===null || typeof y == "number") && 
+			     typeof z == "function" )
+			{
+				_fnEventAdd( sKey, x, y, z );
+			}
+			else if ( typeof x == "object" && typeof y == "function" )
+			{
+				var aCoords = _fnCoordsFromCell( x );
+				_fnEventAdd( sKey, aCoords[0], aCoords[1], y );
+			}
+			else
+			{
+				alert( "Unhandable event type was added: x" +x+ "  y:" +y+ "  z:" +z );
+			}
+		};
+	}
+	
+	
+	/*
+	 * Function: _fnEventRemoveTemplate
+	 * Purpose:  Create a function (with closure for sKey) event removal API
+	 * Returns:  function: - template function
+	 * Inputs:   string:sKey - type of event to detect
+	 */
+	function _fnEventRemoveTemplate( sKey )
+	{
+		/*
+		 * Function: -
+		 * Purpose:  API function for removing event from cache
+		 * Returns:  int: - number of events removed
+		 * Inputs:   1. node:x - target node to remove event from
+		 *           2. function:y - callback function to apply
+		 *         or
+		 *           1. int:x - x coord. of target cell (can be null for live events)
+		 *           2. int:y - y coord. of target cell (can be null for live events)
+		 *           3. function:z - callback function to remove - optional
+		 * Notes:    This function is (interally) overloaded (in as much as javascript allows for
+		 *           that) - the target cell can be given by either node or coords and the function
+		 *           to remove is optional
+		 */
+		return function ( x, y, z ) {
+			if ( (x===null || typeof arguments[0] == "number") && 
+			     (y===null || typeof arguments[1] == "number" ) )
+			{
+				if ( typeof arguments[2] == "function" )
+				{
+					_fnEventRemove( sKey, x, y, z );
+				}
+				else
+				{
+					_fnEventRemove( sKey, x, y );
+				}
+			}
+			else if ( typeof arguments[0] == "object" )
+			{
+				var aCoords = _fnCoordsFromCell( x );
+				if ( typeof arguments[1] == "function" )
+				{
+					_fnEventRemove( sKey, aCoords[0], aCoords[1], y );
+				}
+				else
+				{
+					_fnEventRemove( sKey, aCoords[0], aCoords[1] );
+				}
+			}
+			else
+			{
+				alert( "Unhandable event type was removed: x" +x+ "  y:" +y+ "  z:" +z );
+			}
+		};
+	}
+	
+	/* Use the template functions to add the event API functions */
+	for ( var sKey in _oaoEvents )
+	{
+		if ( sKey )
+		{
+			this.event[sKey] = _fnEventAddTemplate( sKey );
+			this.event.remove[sKey] = _fnEventRemoveTemplate( sKey );
+		}
+	}
+	
+	
+	/*
+	 * Function: _fnEventAdd
+	 * Purpose:  Add an event to the internal cache
+	 * Returns:  -
+	 * Inputs:   string:sType - type of event to add, given by the available elements in _oaoEvents
+	 *           int:x - x-coords to add event to - can be null for "blanket" event
+	 *           int:y - y-coords to add event to - can be null for "blanket" event
+	 *           function:fn - callback function for when triggered
+	 */
+	function _fnEventAdd( sType, x, y, fn )
+	{
+		_oaoEvents[sType].push( {
+			"x": x,
+			"y": y,
+			"fn": fn
+		} );
+	}
+	
+	
+	/*
+	 * Function: _fnEventRemove
+	 * Purpose:  Remove an event from the event cache
+	 * Returns:  int: - number of matching events removed
+	 * Inputs:   string:sType - type of event to look for
+	 *           node:nTarget - target table cell
+	 *           function:fn - optional - remove this function. If not given all handlers of this
+	 *             type will be removed
+	 */
+	function _fnEventRemove( sType, x, y, fn )
+	{
+		var iCorrector = 0;
+		
+		for ( var i=0, iLen=_oaoEvents[sType].length ; i<iLen-iCorrector ; i++ )
+		{
+			if ( typeof fn != 'undefined' )
+			{
+				if ( _oaoEvents[sType][i-iCorrector].x == x &&
+				     _oaoEvents[sType][i-iCorrector].y == y &&
+					   _oaoEvents[sType][i-iCorrector].fn == fn )
+				{
+					_oaoEvents[sType].splice( i-iCorrector, 1 );
+					iCorrector++;
+				}
+			}
+			else
+			{
+				if ( _oaoEvents[sType][i-iCorrector].x == x &&
+				     _oaoEvents[sType][i-iCorrector].y == y )
+				{
+					_oaoEvents[sType].splice( i, 1 );
+					return 1;
+				}
+			}
+		}
+		return iCorrector;
+	}
+	
+	
+	/*
+	 * Function: _fnEventFire
+	 * Purpose:  Look thought the events cache and fire off the event of interest
+	 * Returns:  int:iFired - number of events fired
+	 * Inputs:   string:sType - type of event to look for
+	 *           int:x - x coord of cell
+	 *           int:y - y coord of  ell
+	 * Notes:    It might be more efficient to return after the first event has been tirggered,
+	 *           but that would mean that only one function of a particular type can be
+	 *           subscribed to a particular node.
+	 */
+	function _fnEventFire ( sType, x, y )
+	{
+		var iFired = 0;
+		var aEvents = _oaoEvents[sType];
+		for ( var i=0 ; i<aEvents.length ; i++ )
+		{
+			if ( (aEvents[i].x == x     && aEvents[i].y == y    ) ||
+			     (aEvents[i].x === null && aEvents[i].y == y    ) ||
+			     (aEvents[i].x == x     && aEvents[i].y === null ) ||
+			     (aEvents[i].x === null && aEvents[i].y === null )
+			)
+			{
+				aEvents[i].fn( _fnCellFromCoords(x,y), x, y );
+				iFired++;
+			}
+		}
+		return iFired;
+	}
+	
+	
+	
+	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+	 * Focus functions
+	 */
+	
+	/*
+	 * Function: _fnSetFocus
+	 * Purpose:  Set focus on a node, and remove from an old node if needed
+	 * Returns:  -
+	 * Inputs:   node:nTarget - node we want to focus on
+	 *           bool:bAutoScroll - optional - should we scroll the view port to the display
+	 */
+	function _fnSetFocus( nTarget, bAutoScroll )
+	{
+		/* If node already has focus, just ignore this call */
+		if ( _nOldFocus == nTarget )
+		{
+			return;
+		}
+		
+		if ( typeof bAutoScroll == 'undefined' )
+		{
+			bAutoScroll = true;
+		}
+		
+		/* Remove old focus (with blur event if needed) */
+		if ( _nOldFocus !== null )
+		{
+			_fnRemoveFocus( _nOldFocus );
+		}
+		
+		/* Add the new class to highlight the focused cell */
+		jQuery(nTarget).addClass( _sFocusClass );
+		jQuery(nTarget).parent().addClass( _sFocusClass );
+		
+		/* If it's a DataTable then we need to jump the paging to the relevant page */
+		var oSettings;
+		if ( _oDatatable )
+		{
+			oSettings = _oDatatable.fnSettings();
+			var iRow = _fnFindDtCell( nTarget )[1];
+			var bKeyCaptureCache = _bKeyCapture;
+			
+			/* Page forwards */
+			while ( iRow >= oSettings.fnDisplayEnd() )
+			{
+				if ( oSettings._iDisplayLength >= 0 )
+				{
+					/* Make sure we are not over running the display array */
+					if ( oSettings._iDisplayStart + oSettings._iDisplayLength < oSettings.fnRecordsDisplay() )
+					{
+						oSettings._iDisplayStart += oSettings._iDisplayLength;
+					}
+				}
+				else
+				{
+					oSettings._iDisplayStart = 0;
+				}
+				_oDatatable.oApi._fnCalculateEnd( oSettings );
+			}
+			
+			/* Page backwards */
+			while ( iRow < oSettings._iDisplayStart )
+			{
+				oSettings._iDisplayStart = oSettings._iDisplayLength>=0 ?
+					oSettings._iDisplayStart - oSettings._iDisplayLength :
+					0;
+					
+				if ( oSettings._iDisplayStart < 0 )
+				{
+				  oSettings._iDisplayStart = 0;
+				}
+				_oDatatable.oApi._fnCalculateEnd( oSettings );
+			}
+			
+			/* Re-draw the table */
+			_oDatatable.oApi._fnDraw( oSettings );
+			
+			/* Restore the key capture */
+			_bKeyCapture = bKeyCaptureCache;
+		}
+		
+		/* Cache the information that we are interested in */
+		var aNewPos = _fnCoordsFromCell( nTarget );
+		_nOldFocus = nTarget;
+		_iOldX = aNewPos[0];
+		_iOldY = aNewPos[1];
+		
+		var iViewportHeight, iViewportWidth, iScrollTop, iScrollLeft, iHeight, iWidth, aiPos;
+		if ( bAutoScroll )
+		{
+			/* Scroll the viewport such that the new cell is fully visible in the rendered window */
+			iViewportHeight = document.documentElement.clientHeight;
+			iViewportWidth = document.documentElement.clientWidth;
+			iScrollTop = document.body.scrollTop || document.documentElement.scrollTop;
+			iScrollLeft = document.body.scrollLeft || document.documentElement.scrollLeft;
+			iHeight = nTarget.offsetHeight;
+			iWidth = nTarget.offsetWidth;
+			aiPos = _fnGetPos( nTarget );
+			
+			/* Take account of scrolling in DataTables 1.7 - remove scrolling since that would add to
+			 * the positioning calculation
+			 */
+			if ( _oDatatable && typeof oSettings.oScroll != 'undefined' &&
+			  (oSettings.oScroll.sX !== "" || oSettings.oScroll.sY !== "") )
+			{
+				aiPos[1] -= $(oSettings.nTable.parentNode).scrollTop();
+				aiPos[0] -= $(oSettings.nTable.parentNode).scrollLeft();
+			}
+			
+			/* Correct viewport positioning for vertical scrolling */
+			if ( aiPos[1]+iHeight > iScrollTop+iViewportHeight )
+			{
+				/* Displayed element if off the bottom of the viewport */
+				_fnSetScrollTop( aiPos[1]+iHeight - iViewportHeight );
+			}
+			else if ( aiPos[1] < iScrollTop )
+			{
+				/* Displayed element if off the top of the viewport */
+				_fnSetScrollTop( aiPos[1] );
+			}
+			
+			/* Correct viewport positioning for horizontal scrolling */
+			if ( aiPos[0]+iWidth > iScrollLeft+iViewportWidth )
+			{
+				/* Displayed element is off the bottom of the viewport */
+				_fnSetScrollLeft( aiPos[0]+iWidth - iViewportWidth );
+			}
+			else if ( aiPos[0] < iScrollLeft )
+			{
+				/* Displayed element if off the Left of the viewport */
+				_fnSetScrollLeft( aiPos[0] );
+			}
+		}
+		
+		/* Take account of scrolling in DataTables 1.7 */
+		if ( _oDatatable && typeof oSettings.oScroll != 'undefined' &&
+		  (oSettings.oScroll.sX !== "" || oSettings.oScroll.sY !== "") )
+		{
+			var dtScrollBody = oSettings.nTable.parentNode;
+			iViewportHeight = dtScrollBody.clientHeight;
+			iViewportWidth = dtScrollBody.clientWidth;
+			iScrollTop = dtScrollBody.scrollTop;
+			iScrollLeft = dtScrollBody.scrollLeft;
+			iHeight = nTarget.offsetHeight;
+			iWidth = nTarget.offsetWidth;
+			
+			/* Correct for vertical scrolling */
+			if ( nTarget.offsetTop + iHeight > iViewportHeight+iScrollTop )
+			{
+				dtScrollBody.scrollTop = (nTarget.offsetTop + iHeight) - iViewportHeight;
+			}
+			else if ( nTarget.offsetTop < iScrollTop )
+			{
+				dtScrollBody.scrollTop = nTarget.offsetTop;
+			}
+			
+			/* Correct for horizontal scrolling */
+			if ( nTarget.offsetLeft + iWidth > iViewportWidth+iScrollLeft )
+			{
+				dtScrollBody.scrollLeft = (nTarget.offsetLeft + iWidth) - iViewportWidth;
+			}
+			else if ( nTarget.offsetLeft < iScrollLeft )
+			{
+				dtScrollBody.scrollLeft = nTarget.offsetLeft;
+			}
+		}
+
+		/* Focused - so we want to capture the keys */
+		_fnCaptureKeys();
+		
+		/* Fire of the focus event if there is one */
+		_fnEventFire( "focus", _iOldX, _iOldY );
+	}
+	
+	
+	/*
+	 * Function: _fnBlur
+	 * Purpose:  Blur focus from the whole table
+	 * Returns:  -
+	 * Inputs:   -
+	 */
+	function _fnBlur()
+	{
+		_fnRemoveFocus( _nOldFocus );
+		_iOldX = null;
+		_iOldY = null;
+		_nOldFocus = null;
+		_fnReleaseKeys();
+	}
+	
+	
+	/*
+	 * Function: _fnRemoveFocus
+	 * Purpose:  Remove focus from a cell and fire any blur events which are attached
+	 * Returns:  -
+	 * Inputs:   node:nTarget - cell of interest
+	 */
+	function _fnRemoveFocus( nTarget )
+	{
+		jQuery(nTarget).removeClass( _sFocusClass );
+		jQuery(nTarget).parent().removeClass( _sFocusClass );
+		_fnEventFire( "blur", _iOldX, _iOldY );
+	}
+	
+	
+	/*
+	 * Function: _fnClick
+	 * Purpose:  Focus on the element that has been clicked on by the user
+	 * Returns:  -
+	 * Inputs:   event:e - click event
+	 */
+	function _fnClick ( e )
+	{
+		var nTarget = this;
+		while ( nTarget.nodeName != "TD" )
+		{
+			nTarget = nTarget.parentNode;
+		}
+		
+		_fnSetFocus( nTarget );
+		_fnCaptureKeys();
+	}
+	
+	
+	
+	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+	 * Key events
+	 */
+	
+	/*
+	 * Function: _fnKey
+	 * Purpose:  Deal with a key events, be it moving the focus or return etc.
+	 * Returns:  bool: - allow browser default action
+	 * Inputs:   event:e - key event
+	 */
+	function _fnKey ( e )
+	{
+		/* If user or system has blocked KeyTable from doing anything, just ignore this event */
+		if ( _that.block || !_bKeyCapture )
+		{
+			return true;
+		}
+		
+		/* If a modifier key is pressed (exapct shift), ignore the event */
+		if ( e.metaKey || e.altKey || e.ctrlKey )
+		{
+		    return true;
+		}
+		var
+			x, y,
+			iTableWidth = _nBody.getElementsByTagName('tr')[0].getElementsByTagName('td').length, 
+			iTableHeight;
+		
+		/* Get table height and width - done here so as to be dynamic (if table is updated) */
+		if ( _oDatatable )
+		{
+			/* 
+			 * Locate the current node in the DataTable overriding the old positions - the reason for
+			 * is is that there might have been some DataTables interaction between the last focus and
+			 * now
+			 */
+			var oSettings = _oDatatable.fnSettings();
+			iTableHeight = oSettings.aiDisplay.length;
+			
+			var aDtPos = _fnFindDtCell( _nOldFocus );
+			if ( aDtPos === null )
+			{
+				/* If the table has been updated such that the focused cell can't be seen - do nothing */
+				return;
+			}
+			_iOldX = aDtPos[ 0 ];
+			_iOldY = aDtPos[ 1 ];
+		}
+		else
+		{
+			iTableHeight = _nBody.getElementsByTagName('tr').length;
+		}
+		
+		/* Capture shift+tab to match the left arrow key */
+		var iKey = (e.keyCode == 9 && e.shiftKey) ? -1 : e.keyCode;
+		
+		switch( iKey )
+		{
+			case 13: /* return */
+			 	e.preventDefault();
+ 				e.stopPropagation();
+				_fnEventFire( "action", _iOldX, _iOldY );
+				return true;
+				
+			case 27: /* esc */
+				if ( !_fnEventFire( "esc", _iOldX, _iOldY ) )
+				{
+					/* Only lose focus if there isn't an escape handler on the cell */
+					_fnBlur();
+					return;
+				}
+				x = _iOldX;
+				y = _iOldY;
+				break;
+			
+			case -1:
+			case 37: /* left arrow */
+				if ( _iOldX > 0 ) {
+					x = _iOldX - 1;
+					y = _iOldY;
+				} else if ( _iOldY > 0 ) {
+					x = iTableWidth-1;
+					y = _iOldY - 1;
+				} else {
+					/* at start of table */
+					if ( iKey == -1 && _bForm )
+					{
+						/* If we are in a form, return focus to the 'input' element such that tabbing will
+						 * follow correctly in the browser
+						 */
+						_bInputFocused = true;
+						_nInput.focus();
+						
+						/* This timeout is a little nasty - but IE appears to have some asyhnc behaviour for 
+						 * focus
+						 */
+						setTimeout( function(){ _bInputFocused = false; }, 0 );
+						_bKeyCapture = false;
+						_fnBlur();
+						return true; 
+					}
+					else
+					{
+						return false;
+					}
+				}
+				break;
+			
+			case 38: /* up arrow */
+				if ( _iOldY > 0 ) {
+					x = _iOldX;
+					y = _iOldY - 1;
+				} else {
+					return false;
+				}
+				break;
+			
+			case 9: /* tab */
+			case 39: /* right arrow */
+				if ( _iOldX < iTableWidth-1 ) {
+					x = _iOldX + 1;
+					y = _iOldY;
+				} else if ( _iOldY < iTableHeight-1 ) {
+					x = 0;
+					y = _iOldY + 1;
+				} else {
+					/* at end of table */
+					if ( iKey == 9 && _bForm )
+					{
+						/* If we are in a form, return focus to the 'input' element such that tabbing will
+						 * follow correctly in the browser
+						 */
+						_bInputFocused = true;
+						_nInput.focus();
+						
+						/* This timeout is a little nasty - but IE appears to have some asyhnc behaviour for 
+						 * focus
+						 */
+						setTimeout( function(){ _bInputFocused = false; }, 0 );
+						_bKeyCapture = false;
+						_fnBlur();
+						return true; 
+					}
+					else
+					{
+						return false;
+					}
+				}
+				break;
+			
+			case 40: /* down arrow */
+				if ( _iOldY < iTableHeight-1 ) {
+					x = _iOldX;
+					y = _iOldY + 1;
+				} else {
+					return false;
+				}
+				break;
+			
+			default: /* Nothing we are interested in */
+				return true;
+		}
+		
+		_fnSetFocus( _fnCellFromCoords(x, y) );
+		return false;
+	}
+	
+	
+	/*
+	 * Function: _fnCaptureKeys
+	 * Purpose:  Start capturing key events for this table
+	 * Returns:  -
+	 * Inputs:   -
+	 */
+	function _fnCaptureKeys( )
+	{
+		if ( !_bKeyCapture )
+		{
+			_bKeyCapture = true;
+		}
+	}
+	
+	
+	/*
+	 * Function: _fnReleaseKeys
+	 * Purpose:  Stop capturing key events for this table
+	 * Returns:  -
+	 * Inputs:   -
+	 */
+	function _fnReleaseKeys( )
+	{
+		_bKeyCapture = false;
+	}
+	
+	
+	
+	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+	 * Support functions
+	 */
+	
+	/*
+	 * Function: _fnCellFromCoords
+	 * Purpose:  Calulate the target TD cell from x and y coordinates
+	 * Returns:  node: - TD target
+	 * Inputs:   int:x - x coordinate
+	 *           int:y - y coordinate
+	 */
+	function _fnCellFromCoords( x, y )
+	{
+		if ( _oDatatable )
+		{
+			var oSettings = _oDatatable.fnSettings();
+			if ( typeof oSettings.aoData[ oSettings.aiDisplay[ y ] ] != 'undefined' )
+			{
+				return oSettings.aoData[ oSettings.aiDisplay[ y ] ].nTr.getElementsByTagName('td')[x];
+			}
+			else
+			{
+				return null;
+			}
+		}
+		else
+		{
+			return jQuery('tr:eq('+y+')>td:eq('+x+')', _nBody )[0];
+		}
+	}
+	
+	
+	/*
+	 * Function: _fnCoordsFromCell
+	 * Purpose:  Calculate the x and y position in a table from a TD cell
+	 * Returns:  array[2] int: [x, y]
+	 * Inputs:   node:n - TD cell of interest
+	 * Notes:    Not actually interested in this for DataTables since it might go out of date
+	 */
+	function _fnCoordsFromCell( n )
+	{
+		if ( _oDatatable )
+		{
+			var oSettings = _oDatatable.fnSettings();
+			return [
+				jQuery('td', n.parentNode).index(n),
+				jQuery('tr', n.parentNode.parentNode).index(n.parentNode) + oSettings._iDisplayStart
+			];
+		}
+		else
+		{
+			return [
+				jQuery('td', n.parentNode).index(n),
+				jQuery('tr', n.parentNode.parentNode).index(n.parentNode)
+			];
+		}
+	}
+	
+	
+	/*
+	 * Function: _fnSetScrollTop
+	 * Purpose:  Set the vertical scrolling position
+	 * Returns:  -
+	 * Inputs:   int:iPos - scrolltop
+	 * Notes:    This is so nasty, but without browser detection you can't tell which you should set
+	 *           So on browsers that support both, the scroll top will be set twice. I can live with
+	 *           that :-)
+	 */
+	function _fnSetScrollTop( iPos )
+	{
+		document.documentElement.scrollTop = iPos;
+		document.body.scrollTop = iPos;
+	}
+	
+	
+	/*
+	 * Function: _fnSetScrollLeft
+	 * Purpose:  Set the horizontal scrolling position
+	 * Returns:  -
+	 * Inputs:   int:iPos - scrollleft
+	 */
+	function _fnSetScrollLeft( iPos )
+	{
+		document.documentElement.scrollLeft = iPos;
+		document.body.scrollLeft = iPos;
+	}
+	
+	
+	/*
+	 * Function: _fnGetPos
+	 * Purpose:  Get the position of an object on the rendered page
+	 * Returns:  array[2] int: [left, right]
+	 * Inputs:   node:obj - element of interest
+	 */
+	function _fnGetPos ( obj )
+	{
+		var iLeft = 0;
+		var iTop = 0;
+		
+		if (obj.offsetParent) 
+		{
+			iLeft = obj.offsetLeft;
+			iTop = obj.offsetTop;
+			obj = obj.offsetParent;
+			while (obj) 
+			{
+				iLeft += obj.offsetLeft;
+				iTop += obj.offsetTop;
+				obj = obj.offsetParent;
+			}
+		}
+		return [iLeft,iTop];
+	}
+	
+	
+	/*
+	 * Function: _fnFindDtCell
+	 * Purpose:  Get the coords. of a cell from the DataTables internal information
+	 * Returns:  array[2] int: [x, y] coords. or null if not found
+	 * Inputs:   node:nTarget - the node of interest
+	 */
+	function _fnFindDtCell( nTarget )
+	{
+		var oSettings = _oDatatable.fnSettings();
+		for ( var i=0, iLen=oSettings.aiDisplay.length ; i<iLen ; i++ )
+		{
+			var nTr = oSettings.aoData[ oSettings.aiDisplay[i] ].nTr;
+			var nTds = nTr.getElementsByTagName('td');
+			for ( var j=0, jLen=nTds.length ; j<jLen ; j++ )
+			{
+				if ( nTds[j] == nTarget )
+				{
+					return [ j, i ];
+				}
+			}
+		}
+		return null;
+	}
+	
+	
+	
+	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+	 * Initialisation
+	 */
+	
+	/*
+	 * Function: _fnInit
+	 * Purpose:  Initialise the KeyTable
+	 * Returns:  -
+	 * Inputs:   object:oInit - optional - Initalisation object with the following parameters:
+	 *   array[2] int:focus - x and y coordinates of the initial target
+	 *     or
+	 *     node:focus - the node to set initial focus on
+	 *   node:table - the table to use, if not given, first table with class 'KeyTable' will be used
+	 *   string:focusClass - focusing class to give to table elements
+	 *           object:that - focus
+	 *   bool:initScroll - scroll the view port on load, default true
+	 *   int:tabIndex - the tab index to give the hidden input element
+	 */
+	function _fnInit( oInit, that )
+	{
+		/* Save scope */
+		_that = that;
+		
+		/* Capture undefined initialisation and apply the defaults */
+		if ( typeof oInit == 'undefined' ) {
+			oInit = {};
+		}
+		
+		if ( typeof oInit.focus == 'undefined' ) {
+			oInit.focus = [0,0];
+		}
+		
+		if ( typeof oInit.table == 'undefined' ) {
+			oInit.table = jQuery('table.KeyTable')[0];
+		} else {
+			$(oInit.table).addClass('KeyTable');
+		}
+		
+		if ( typeof oInit.focusClass != 'undefined' ) {
+			_sFocusClass = oInit.focusClass;
+		}
+		
+		if ( typeof oInit.datatable != 'undefined' ) {
+			_oDatatable = oInit.datatable;
+		}
+		
+		if ( typeof oInit.initScroll == 'undefined' ) {
+			oInit.initScroll = true;
+		}
+		
+		if ( typeof oInit.form == 'undefined' ) {
+			oInit.form = false;
+		}
+		_bForm = oInit.form;
+		
+		/* Cache the tbody node of interest */
+		_nBody = oInit.table.getElementsByTagName('tbody')[0];
+		
+		/* If the table is inside a form, then we need a hidden input box which can be used by the
+		 * browser to catch the browser tabbing for our table
+		 */
+		if ( _bForm )
+		{
+			var nDiv = document.createElement('div');
+			_nInput = document.createElement('input');
+			nDiv.style.height = "1px"; /* Opera requires a little something */
+			nDiv.style.width = "0px";
+			nDiv.style.overflow = "hidden";
+			if ( typeof oInit.tabIndex != 'undefined' )
+			{
+				_nInput.tabIndex = oInit.tabIndex;
+			}
+			nDiv.appendChild(_nInput);
+			oInit.table.parentNode.insertBefore( nDiv, oInit.table.nextSibling );
+			
+			jQuery(_nInput).focus( function () {
+				/* See if we want to 'tab into' the table or out */
+				if ( !_bInputFocused )
+				{
+					_bKeyCapture = true;
+					_bInputFocused = false;
+					if ( typeof oInit.focus.nodeName != "undefined" )
+					{
+						_fnSetFocus( oInit.focus, oInit.initScroll );
+					}
+					else
+					{
+						_fnSetFocus( _fnCellFromCoords( oInit.focus[0], oInit.focus[1]), oInit.initScroll );
+					}
+					
+					/* Need to interup the thread for this to work */
+					setTimeout( function() { _nInput.blur(); }, 0 );
+				}
+			} );
+			_bKeyCapture = false;
+		}
+		else
+		{
+			/* Set the initial focus on the table */
+			if ( typeof oInit.focus.nodeName != "undefined" )
+			{
+				_fnSetFocus( oInit.focus, oInit.initScroll );
+			}
+			else
+			{
+				_fnSetFocus( _fnCellFromCoords( oInit.focus[0], oInit.focus[1]), oInit.initScroll );
+			}
+			_fnCaptureKeys();
+		}
+		
+		/*
+		 * Add event listeners
+		 * Well - I hate myself for doing this, but it would appear that key events in browsers are
+		 * a complete mess, particulay when you consider arrow keys, which of course are one of the
+		 * main areas of interest here. So basically for arrow keys, there is no keypress event in
+		 * Safari and IE, while there is in Firefox and Opera. But Firefox and Opera don't repeat the
+		 * keydown event for an arrow key. OUCH. See the following two articles for more:
+		 *   http://www.quirksmode.org/dom/events/keys.html
+		 *   https://lists.webkit.org/pipermail/webkit-dev/2007-December/002992.html
+		 *   http://unixpapa.com/js/key.html
+		 * PPK considers the IE / Safari method correct (good enough for me!) so we (urgh) detect
+		 * Mozilla and Opera and apply keypress for them, while everything else gets keydown. If
+		 * Mozilla or Opera change their implemention in future, this will need to be updated... 
+		 * although at the time of writing (14th March 2009) Minefield still uses the 3.0 behaviour.
+		 */
+		if ( jQuery.browser.mozilla || jQuery.browser.opera )
+		{
+			jQuery(document).bind( "keypress", _fnKey );
+		}
+		else
+		{
+			jQuery(document).bind( "keydown", _fnKey );
+		}
+		
+		if ( _oDatatable )
+		{
+			jQuery('tbody td', _oDatatable.fnSettings().nTable).live( 'click', _fnClick );
+		}
+		else
+		{
+			jQuery('td', _nBody).live( 'click', _fnClick );
+		}
+		
+		/* Loose table focus when click outside the table */
+		jQuery(document).click( function(e) {
+			var nTarget = e.target;
+			var bTableClick = false;
+			while ( nTarget )
+			{
+				if ( nTarget == oInit.table )
+				{
+					bTableClick = true;
+					break;
+				}
+				nTarget = nTarget.parentNode;
+			}
+			if ( !bTableClick )
+			{
+				_fnBlur();
+			}
+		} );
+	}
+	
+	/* Initialise our new object */
+	_fnInit( oInit, this );
+}