diff --git a/themes/base/jquery.ui.spinner.css b/themes/base/jquery.ui.spinner.css
index 6d8bfa59b..0a0a5ef6d 100644
--- a/themes/base/jquery.ui.spinner.css
+++ b/themes/base/jquery.ui.spinner.css
@@ -1,24 +1,12 @@
 /* Spinner
 ----------------------------------*/
 .ui-spinner { position:relative; display: inline-block; overflow: hidden; padding: 0; vertical-align: middle; height: 1.8em; }
-.ui-spinner-input { border: none; background: none; padding: 0; margin: .2em 0; vertical-align: middle; }
-.ui-spinner-button { width: 16px; height: 50%; font-size: .5em; padding: 0; margin: 0; z-index: 100; text-align: center; vertical-align: middle; position: absolute; cursor: default; display: block; overflow: hidden; }
-.ui-spinner a.ui-spinner-button { border-top: none; border-bottom: none; } /* more specificity required here to overide default borders */
+.ui-spinner-input { border: none; background: none; padding: 0; margin: .2em 0; vertical-align: middle; float: left; margin-left: .4em; margin-right: 22px; }
+.ui-spinner-button { width: 16px; height: 50%; font-size: .5em; padding: 0; margin: 0; z-index: 100; text-align: center; vertical-align: middle; position: absolute; cursor: default; display: block; overflow: hidden; right: 0; }
+.ui-spinner a.ui-spinner-button { border-top: none; border-bottom: none; border-right: none; } /* more specificity required here to overide default borders */
 .ui-spinner .ui-icon { position: absolute; margin-top: -8px; top: 50%; left: 0; } /* vertical centre icon */
 .ui-spinner-up { top: 0; }
 .ui-spinner-down { bottom: 0; }
 
-/* ltr (default) */
-.ui-spinner-ltr { direction: ltr; }
-.ui-spinner-ltr .ui-spinner-input { float: left; margin-left: .4em; margin-right: 22px; }
-.ui-spinner-ltr .ui-spinner-button { right: 0; }
-.ui-spinner-ltr a.ui-spinner-button { border-right: none; }
-
-/* rtl */
-.ui-spinner-rtl { direction: rtl; }
-.ui-spinner-rtl .ui-spinner-input { float: right; margin-left: 22px; margin-right: .4em; }
-.ui-spinner-rtl .ui-spinner-button { left: 0; }
-.ui-spinner-rtl a.ui-spinner-button { border-left: none; }
-
 /* TR overrides */
 div.ui-spinner { background: none; }
diff --git a/ui/jquery.ui.spinner.js b/ui/jquery.ui.spinner.js
index 022e7f7da..4cfbe62e1 100644
--- a/ui/jquery.ui.spinner.js
+++ b/ui/jquery.ui.spinner.js
@@ -21,7 +21,6 @@ var hover = 'ui-state-hover',
 
 $.widget('ui.spinner', {
 	options: {
-		dir: 'ltr',
 		incremental: true,
 		max: Number.MAX_VALUE,
 		min: -Number.MAX_VALUE,
@@ -138,13 +137,11 @@ $.widget('ui.spinner', {
 		self.uiSpinner = uiSpinner;
 	},
 	_uiSpinnerHtml: function() {
-		return '<div role="spinbutton" class="ui-spinner ui-state-default ui-widget ui-widget-content ui-corner-all ui-spinner-' + this.options.dir + '"></div>';
+		return '<div role="spinbutton" class="ui-spinner ui-state-default ui-widget ui-widget-content ui-corner-all"></div>';
 	},
 	_buttonHtml: function() {
-		return '<a class="ui-spinner-button ui-spinner-up ui-corner-t' + this.options.dir.substr(-1,1) + 
-				'"><span class="ui-icon ui-icon-triangle-1-n">&#9650;</span></a>' +
-				'<a class="ui-spinner-button ui-spinner-down ui-corner-b' + this.options.dir.substr(-1,1) + 
-				'"><span class="ui-icon ui-icon-triangle-1-s">&#9660;</span></a>';
+		return '<a class="ui-spinner-button ui-spinner-up ui-corner-tr"><span class="ui-icon ui-icon-triangle-1-n">&#9650;</span></a>' +
+				'<a class="ui-spinner-button ui-spinner-down ui-corner-br"><span class="ui-icon ui-icon-triangle-1-s">&#9660;</span></a>';
 	},
 	_start: function(event) {
 		if (!this.spinning && this._trigger('start', event, { value: this.value()}) !== false) {