diff --git a/pagination/input.js b/pagination/input.js
index 168ff72..2b3fa19 100644
--- a/pagination/input.js
+++ b/pagination/input.js
@@ -12,211 +12,212 @@
  *  @example
  *    $(document).ready(function() {
  *        $('#example').dataTable( {
- *            "sPaginationType": "input"
+ *            "pagingType": "input"
  *        } );
  *    } );
  */
 
-$.fn.dataTableExt.oPagination.input = {
-	"fnInit": function ( oSettings, nPaging, fnCallbackDraw )
-	{
-		var nFirst = document.createElement( 'span' );
-		var nPrevious = document.createElement( 'span' );
-		var nNext = document.createElement( 'span' );
-		var nLast = document.createElement( 'span' );
-		var nInput = document.createElement( 'input' );
-		var nPage = document.createElement( 'span' );
-		var nOf = document.createElement( 'span' );
-
-		nFirst.innerHTML = oSettings.oLanguage.oPaginate.sFirst;
-		nPrevious.innerHTML = oSettings.oLanguage.oPaginate.sPrevious;
-		nNext.innerHTML = oSettings.oLanguage.oPaginate.sNext;
-		nLast.innerHTML = oSettings.oLanguage.oPaginate.sLast;
-
-		nFirst.className = "paginate_button first disabled";
-		nPrevious.className = "paginate_button previous disabled";
-		nNext.className="paginate_button next";
-		nLast.className = "paginate_button last";
-		nOf.className = "paginate_of";
-		nPage.className = "paginate_page";
-		nInput.className = "paginate_input";
-
-		if ( oSettings.sTableId !== '' )
-		{
-			nPaging.setAttribute( 'id', oSettings.sTableId+'_paginate' );
-			nPrevious.setAttribute( 'id', oSettings.sTableId+'_previous' );
-			nPrevious.setAttribute( 'id', oSettings.sTableId+'_previous' );
-			nNext.setAttribute( 'id', oSettings.sTableId+'_next' );
-			nLast.setAttribute( 'id', oSettings.sTableId+'_last' );
-		}
+(function ($) {
+	function calcDisableClasses(oSettings) {
+		var start = oSettings._iDisplayStart;
+		var length = oSettings._iDisplayLength;
+		var visibleRecords = oSettings.fnRecordsDisplay();
+		var all = length === -1;
+
+		// Gordey Doronin: Re-used this code from main jQuery.dataTables source code. To be consistent.
+		var page = all ? 0 : Math.ceil(start / length);
+		var pages = all ? 1 : Math.ceil(visibleRecords / length);
+
+		var disableFirstPrevClass = (page > 0 ? '' : oSettings.oClasses.sPageButtonDisabled);
+		var disableNextLastClass = (page < pages - 1 ? '' : oSettings.oClasses.sPageButtonDisabled);
+
+		return {
+			'first': disableFirstPrevClass,
+			'previous': disableFirstPrevClass,
+			'next': disableNextLastClass,
+			'last': disableNextLastClass
+		};
+	}
 
-		nInput.type = "text";
-		nPage.innerHTML = "Page ";
-
-		nPaging.appendChild( nFirst );
-		nPaging.appendChild( nPrevious );
-		nPaging.appendChild( nPage );
-		nPaging.appendChild( nInput );
-		nPaging.appendChild( nOf );
-		nPaging.appendChild( nNext );
-		nPaging.appendChild( nLast );
-
-		$(nFirst).click( function ()
-		{
-			var iCurrentPage = Math.ceil(oSettings._iDisplayStart / oSettings._iDisplayLength) + 1;
-				if (iCurrentPage != 1)
-				{
-				oSettings.oApi._fnPageChange( oSettings, "first" );
-				fnCallbackDraw( oSettings );
-				$(nFirst).addClass('disabled');
-				$(nPrevious).addClass('disabled');
-				$(nNext).removeClass('disabled');
-				$(nLast).removeClass('disabled');
-				}
-		} );
-
-		$(nPrevious).click( function()
-		{
-			var iCurrentPage = Math.ceil(oSettings._iDisplayStart / oSettings._iDisplayLength) + 1;
-				if (iCurrentPage != 1)
-				{
-				oSettings.oApi._fnPageChange(oSettings, "previous");
-					fnCallbackDraw(oSettings);
-					if (iCurrentPage == 2)
-					{
-						$(nFirst).addClass('disabled');
-						$(nPrevious).addClass('disabled');
-					}
-					$(nNext).removeClass('disabled');
-					$(nLast).removeClass('disabled');
+	function calcCurrentPage(oSettings) {
+		return Math.ceil(oSettings._iDisplayStart / oSettings._iDisplayLength) + 1;
+	}
+
+	function calcPages(oSettings) {
+		return Math.ceil(oSettings.fnRecordsDisplay() / oSettings._iDisplayLength);
+	}
+
+	var firstClassName = 'first';
+	var previousClassName = 'previous';
+	var nextClassName = 'next';
+	var lastClassName = 'last';
+
+	var paginateClassName = 'paginate';
+	var paginateOfClassName = 'paginate_of';
+	var paginatePageClassName = 'paginate_page';
+	var paginateInputClassName = 'paginate_input';
+
+	$.fn.dataTableExt.oPagination.input = {
+		'fnInit': function (oSettings, nPaging, fnCallbackDraw) {
+			var nFirst = document.createElement('span');
+			var nPrevious = document.createElement('span');
+			var nNext = document.createElement('span');
+			var nLast = document.createElement('span');
+			var nInput = document.createElement('input');
+			var nPage = document.createElement('span');
+			var nOf = document.createElement('span');
+
+			var language = oSettings.oLanguage.oPaginate;
+			var classes = oSettings.oClasses;
+
+			nFirst.innerHTML = language.sFirst;
+			nPrevious.innerHTML = language.sPrevious;
+			nNext.innerHTML = language.sNext;
+			nLast.innerHTML = language.sLast;
+
+			nFirst.className = firstClassName + ' ' + classes.sPageButton;
+			nPrevious.className = previousClassName + ' ' + classes.sPageButton;
+			nNext.className = nextClassName + ' ' + classes.sPageButton;
+			nLast.className = lastClassName + ' ' + classes.sPageButton;
+
+			nOf.className = paginateOfClassName;
+			nPage.className = paginatePageClassName;
+			nInput.className = paginateInputClassName;
+
+			if (oSettings.sTableId !== '') {
+				nPaging.setAttribute('id', oSettings.sTableId + '_' + paginateClassName);
+				nFirst.setAttribute('id', oSettings.sTableId + '_' + firstClassName);
+				nPrevious.setAttribute('id', oSettings.sTableId + '_' + previousClassName);
+				nNext.setAttribute('id', oSettings.sTableId + '_' + nextClassName);
+				nLast.setAttribute('id', oSettings.sTableId + '_' + lastClassName);
 			}
-		} );
 
-		$(nNext).click( function()
-		{
-			var iCurrentPage = Math.ceil(oSettings._iDisplayStart / oSettings._iDisplayLength) + 1;
-			if (iCurrentPage != Math.ceil((oSettings.fnRecordsDisplay() / oSettings._iDisplayLength)))
-			{
-				oSettings.oApi._fnPageChange(oSettings, "next");
-				fnCallbackDraw(oSettings);
-				if (iCurrentPage == (Math.ceil((oSettings.fnRecordsDisplay() - 1) / oSettings._iDisplayLength) - 1))
-				{
-					$(nNext).addClass('disabled');
-					$(nLast).addClass('disabled');
+			nInput.type = 'text';
+			nPage.innerHTML = 'Page ';
+
+			nPaging.appendChild(nFirst);
+			nPaging.appendChild(nPrevious);
+			nPaging.appendChild(nPage);
+			nPaging.appendChild(nInput);
+			nPaging.appendChild(nOf);
+			nPaging.appendChild(nNext);
+			nPaging.appendChild(nLast);
+
+			$(nFirst).click(function() {
+				var iCurrentPage = calcCurrentPage(oSettings);
+				if (iCurrentPage !== 1) {
+					oSettings.oApi._fnPageChange(oSettings, 'first');
+					fnCallbackDraw(oSettings);
 				}
-				$(nFirst).removeClass('disabled');
-				$(nPrevious).removeClass('disabled');
-			}
-		} );
-
-		$(nLast).click( function()
-		{
-			var iCurrentPage = Math.ceil(oSettings._iDisplayStart / oSettings._iDisplayLength) + 1;
-				if (iCurrentPage != Math.ceil((oSettings.fnRecordsDisplay() / oSettings._iDisplayLength)))
-				{
-					oSettings.oApi._fnPageChange(oSettings, "last");
+			});
+
+			$(nPrevious).click(function() {
+				var iCurrentPage = calcCurrentPage(oSettings);
+				if (iCurrentPage !== 1) {
+					oSettings.oApi._fnPageChange(oSettings, 'previous');
 					fnCallbackDraw(oSettings);
-					$(nFirst).removeClass('disabled');
-					$(nPrevious).removeClass('disabled');
-					$(nNext).addClass('disabled');
-					$(nLast).addClass('disabled');
 				}
-		} );
+			});
 
-		$(nInput).keyup( function (e) {
-			// 38 = up arrow, 39 = right arrow
-			if ( e.which == 38 || e.which == 39 )
-			{
-				this.value++;
-			}
-			// 37 = left arrow, 40 = down arrow
-			else if ( (e.which == 37 || e.which == 40) && this.value > 1 )
-			{
-				this.value--;
-			}
+			$(nNext).click(function() {
+				var iCurrentPage = calcCurrentPage(oSettings);
+				if (iCurrentPage !== calcPages(oSettings)) {
+					oSettings.oApi._fnPageChange(oSettings, 'next');
+					fnCallbackDraw(oSettings);
+				}
+			});
 
-			if ( this.value === "" || this.value.match(/[^0-9]/) )
-			{
-				/* Nothing entered or non-numeric character */
-				this.value = this.value.replace(/[^\d]/g, ''); // don't even allow anything but digits
-				return;
-			}
+			$(nLast).click(function() {
+				var iCurrentPage = calcCurrentPage(oSettings);
+				if (iCurrentPage !== calcPages(oSettings)) {
+					oSettings.oApi._fnPageChange(oSettings, 'last');
+					fnCallbackDraw(oSettings);
+				}
+			});
 
-			var iNewStart = oSettings._iDisplayLength * (this.value - 1);
-				if (iNewStart < 0)
-				{
-					iNewStart = 0;
+			$(nInput).keyup(function (e) {
+				// 38 = up arrow, 39 = right arrow
+				if (e.which === 38 || e.which === 39) {
+					this.value++;
 				}
-				if (iNewStart >= oSettings.fnRecordsDisplay())
-				{
-					iNewStart = (Math.ceil((oSettings.fnRecordsDisplay() - 1) / oSettings._iDisplayLength) - 1) * oSettings._iDisplayLength;
+				// 37 = left arrow, 40 = down arrow
+				else if ((e.which === 37 || e.which === 40) && this.value > 1) {
+					this.value--;
 				}
 
-				if (iNewStart === 0)
-				{
-					$(nFirst).addClass('disabled');
-					$(nPrevious).addClass('disabled');
-					$(nNext).removeClass('disabled');
-					$(nLast).removeClass('disabled');
+				if (this.value === '' || this.value.match(/[^0-9]/)) {
+					/* Nothing entered or non-numeric character */
+					this.value = this.value.replace(/[^\d]/g, ''); // don't even allow anything but digits
+					return;
 				}
-				else if (iNewStart == ((Math.ceil((oSettings.fnRecordsDisplay() - 1) / oSettings._iDisplayLength) - 1) * oSettings._iDisplayLength))
-				{
-					$(nNext).addClass('disabled');
-					$(nLast).addClass('disabled');
-					$(nFirst).removeClass('disabled');
-					$(nPrevious).removeClass('disabled');
+
+				var iNewStart = oSettings._iDisplayLength * (this.value - 1);
+				if (iNewStart < 0) {
+					iNewStart = 0;
 				}
-				else
-				{
-					$(nFirst).removeClass('disabled');
-					$(nPrevious).removeClass('disabled');
-					$(nNext).removeClass('disabled');
-					$(nLast).removeClass('disabled');
+				if (iNewStart >= oSettings.fnRecordsDisplay()) {
+					iNewStart = (Math.ceil((oSettings.fnRecordsDisplay() - 1) / oSettings._iDisplayLength) - 1) * oSettings._iDisplayLength;
 				}
 
-			oSettings._iDisplayStart = iNewStart;
-			fnCallbackDraw( oSettings );
-		} );
-
-		/* Take the brutal approach to cancelling text selection */
-		$('span', nPaging).bind( 'mousedown', function () { return false; } );
-		$('span', nPaging).bind( 'selectstart', function () { return false; } );
-		
-		// If we can't page anyway, might as well not show it
-		var iPages = Math.ceil((oSettings.fnRecordsDisplay()) / oSettings._iDisplayLength);
-		if(iPages <= 1)
-		{
-			$(nPaging).hide();
-		}
-	},
+				oSettings._iDisplayStart = iNewStart;
+				fnCallbackDraw(oSettings);
+			});
 
+			// Take the brutal approach to cancelling text selection.
+			$('span', nPaging).bind('mousedown', function () { return false; });
+			$('span', nPaging).bind('selectstart', function() { return false; });
 
-	"fnUpdate": function ( oSettings, fnCallbackDraw )
-	{
-		if ( !oSettings.aanFeatures.p )
-		{
-			return;
-		}
-		var iPages = Math.ceil((oSettings.fnRecordsDisplay()) / oSettings._iDisplayLength);
-		var iCurrentPage = Math.ceil(oSettings._iDisplayStart / oSettings._iDisplayLength) + 1;
+			// If we can't page anyway, might as well not show it.
+			var iPages = calcPages(oSettings);
+			if (iPages <= 1) {
+				$(nPaging).hide();
+			}
+		},
 
-		var an = oSettings.aanFeatures.p;
-		if (iPages <= 1) // hide paging when we can't page
-		{
-			$(an).hide();
-		}
-		else
-		{
-			$(an).show();
+		'fnUpdate': function (oSettings) {
+			if (!oSettings.aanFeatures.p) {
+				return;
+			}
 
-			/* Loop over each instance of the pager */
-			for (var i = 0, iLen = an.length ; i < iLen ; i++)
+			var iPages = calcPages(oSettings);
+			var iCurrentPage = calcCurrentPage(oSettings);
+
+			var an = oSettings.aanFeatures.p;
+			if (iPages <= 1) // hide paging when we can't page
 			{
-				var spans = an[i].getElementsByTagName('span');
-				var inputs = an[i].getElementsByTagName('input');
-				spans[3].innerHTML = " of " + iPages;
-				inputs[0].value = iCurrentPage;
+				$(an).hide();
+				return;
 			}
+
+			var disableClasses = calcDisableClasses(oSettings);
+
+			$(an).show();
+
+			// Enable/Disable `first` button.
+			$(an).children('.' + firstClassName)
+				.removeClass(oSettings.oClasses.sPageButtonDisabled)
+				.addClass(disableClasses[firstClassName]);
+
+			// Enable/Disable `prev` button.
+			$(an).children('.' + previousClassName)
+				.removeClass(oSettings.oClasses.sPageButtonDisabled)
+				.addClass(disableClasses[previousClassName]);
+
+			// Enable/Disable `next` button.
+			$(an).children('.' + nextClassName)
+				.removeClass(oSettings.oClasses.sPageButtonDisabled)
+				.addClass(disableClasses[nextClassName]);
+
+			// Enable/Disable `last` button.
+			$(an).children('.' + lastClassName)
+				.removeClass(oSettings.oClasses.sPageButtonDisabled)
+				.addClass(disableClasses[lastClassName]);
+
+			// Paginate of N pages text
+			$(an).children('.' + paginateOfClassName).html(' of ' + iPages);
+
+			// Current page numer input value
+			$(an).children('.' + paginateInputClassName).val(iCurrentPage);
 		}
-	}
-};
+	};
+})(jQuery)