diff --git a/demos/selectmenu/methods.html b/demos/selectmenu/methods.html
index d44581d8047..85c4dfaa8d4 100644
--- a/demos/selectmenu/methods.html
+++ b/demos/selectmenu/methods.html
@@ -25,26 +25,68 @@
 			var speedA = $('select#speedA').selectmenu();
 			
 			$("#index").click(function(event){
+				event.preventDefault();
 				console.log($('select#speedA').selectmenu("index"));
 			});
 			$("#indexNumber").click(function(event){
+				event.preventDefault();
 				console.log($('select#speedA').selectmenu("index", 4));
 			});
 			$("#value").click(function(event){
+				event.preventDefault();
 				console.log($('select#speedA').selectmenu("value"));
 			});
 			$("#valueString").click(function(event){
+				event.preventDefault();
 				console.log($('select#speedA').selectmenu("value", "Medium"));
 			});
 			$("#valueNumber").click(function(event){
+				event.preventDefault();
 				console.log($('select#speedA').selectmenu("value", 4));
 			});
 			$("#valueNumberAsString").click(function(event){
+				event.preventDefault();
 				console.log($('select#speedA').selectmenu("value", "11"));
 			});
 			$("#valueNonExisting").click(function(event){
+				event.preventDefault();
 				console.log($('select#speedA').selectmenu("value", "test123"));
 			});
+
+			// Alex L.
+
+			$('#disableSlow').click(function(e){
+				e.preventDefault();
+				$('select#speedA').selectmenu('disableByValue', 'Slow');				
+			});
+
+			$('#disable11').click(function(e){
+				e.preventDefault();
+				$('select#speedA').selectmenu('disableByValue', '11');
+			});
+
+			$('#disableEverythingButSlow').click(function(e){
+				e.preventDefault();
+
+				$('select#speedA').selectmenu('enableByValue', 'Slow');
+
+				$('select#speedA').selectmenu('disableByValue', 'Slower');
+				$('select#speedA').selectmenu('disableByValue', 'Medium');
+				$('select#speedA').selectmenu('disableByValue', 'Fast');
+				$('select#speedA').selectmenu('disableByValue', 'Faster');
+				$('select#speedA').selectmenu('disableByValue', '11');
+			});
+
+			$('#disableAll').click(function(e){
+				e.preventDefault();
+				$('select#speedA').selectmenu('disableAll');
+			});
+
+			$('#enableAll').click(function(e){
+				e.preventDefault();
+				$('select#speedA').selectmenu('enableAll');
+			});
+
 		});	
 	</script>
 </head>
@@ -59,6 +101,14 @@
 		<a href="#nogo" id="valueNumber">method value with  paramater '4' (passed as number)</a><br />
 		<a href="#nogo" id="valueNumberAsString">method value with  paramater '11' (passed as string)</a><br />
 		<a href="#nogo" id="valueNonExisting">method value with  paramater 'test123' (not existing value)</a>
+		<hr>
+		<a href="#nogo" id="disableSlow">Disable "Slow" option</a><br>
+		<a href="#nogo" id="disable11">Disable "Up to eleven" option</a><br>
+		<a href="#nogo" id="disableEverythingButSlow">Disable everything but "Slow"</a><br>
+		<a href="#nogo" id="disableAll">Disable All</a><br>
+		<a href="#nogo" id="enableAll">Enable All</a>
+
+
 		<br />
 		<h2>"default popup" Style</h2>
 		<fieldset>
diff --git a/ui/jquery.ui.selectmenu.js b/ui/jquery.ui.selectmenu.js
index d878ec5c2bc..acddf1d2cf5 100644
--- a/ui/jquery.ui.selectmenu.js
+++ b/ui/jquery.ui.selectmenu.js
@@ -29,6 +29,7 @@ $.widget("ui.selectmenu", {
 		icons: null,
 		format: null,
 		escapeHtml: false,
+		transferClasses: true,
 		bgImage: function() {}
 	},
 
@@ -405,6 +406,12 @@ $.widget("ui.selectmenu", {
 			.toggleClass( 'ui-icon-triangle-1-s', isDropDown )
 			.toggleClass( 'ui-icon-triangle-2-n-s', !isDropDown );
 
+		// transfer classes to selectmenu and list
+		if ( o.transferClasses ) {
+			var transferClasses = this.element.attr( 'class' ) || '';
+			this.newelement.add( this.list ).addClass( transferClasses );
+		}			
+
 		// set menu width to either menuWidth option value, width option value, or select width
 		if ( o.style == 'dropdown' ) {
 			this.list.width( o.menuWidth ? o.menuWidth : o.width );
@@ -803,6 +810,80 @@ $.widget("ui.selectmenu", {
 		}
 	},
 
+	indexByValue: function(val) {
+		var idx = null;
+		this.element.find('option').each(function(i, opt){
+			if ( opt.value == val ) {
+				idx = opt.index;
+				return false;
+			}
+		});
+		return idx;
+	},
+
+	_isEnabled: function(idx) {
+		var self = this,
+			found = null;
+
+		this.element.find('option').each(function(i, opt){
+			if ( opt.index == idx ) {
+				found = !opt.disabled;
+				return false;
+			}
+		});
+		return found;
+	},
+
+	disableAll: function() {
+		var self = this;
+		this.element.find('option').each(function(i, opt){
+			if ( !opt.disabled ) {
+				self.disable(opt.index);
+			}
+		});		
+		this.disable();
+	},
+
+	enableAll: function() {
+		var self = this;
+		if ( this.options.disabled ) {
+			this.enable();
+		}
+		this.element.find('option').each(function(i, opt){
+			self.enable(opt.index);
+		});		
+	},	
+
+	disableByValue: function(val) {
+		var idx = this.indexByValue(val);
+		if ( idx !== null ) {
+			if ( this.index() == idx ) {
+
+				if ( this._isEnabled(idx+1) ) {
+					this.index(idx+1);
+				} else if ( this._isEnabled(idx-1) ) {
+					this.index(idx-1);
+				} else {
+					this.disable();
+				}
+				
+			}			
+			this.disable(idx);
+		}
+	},
+
+	enableByValue: function(val) {
+		var idx = this.indexByValue(val);
+		if ( idx ) {
+
+			if ( this.options.disabled ) {
+				this.enable();
+			}
+
+			this.enable(idx);
+		}
+	},	
+
 	value: function(newValue) {
 		if (arguments.length) {
 			this.element[0].value = newValue;