diff --git a/dist/css/simpletree.css b/dist/css/simpletree.css
index ad0a3cc4e768489cf27671ef223a243254420aa7..53a0d6088c4edd8405d8a51d8c7eaca3a5cbb8ab 100644
--- a/dist/css/simpletree.css
+++ b/dist/css/simpletree.css
@@ -12,7 +12,6 @@ Adapted as a jQuery plugin by Maurizio Manetti
     list-style-type: none;
     margin: 0;
     padding: 0;
-    font-size: 12px;
     background-image: url('../img/vdot.gif');
     background-repeat: repeat-y;
     background-position: 8px 0;
@@ -60,7 +59,6 @@ Adapted as a jQuery plugin by Maurizio Manetti
 .st-treed .st-last {
     background-image: url('../img/corner.gif');
     background-position: 8px 0;
-    background-color: #fff;
 }
 
 .st-treed .st-file a {
diff --git a/dist/js/simpletree.jquery.js b/dist/js/simpletree.jquery.js
index ae8bde016daebd4b6277ca796046fc37d42ab488..97be69b2fcd8cc8f68d18ee99f4d7844628520b8 100644
--- a/dist/js/simpletree.jquery.js
+++ b/dist/js/simpletree.jquery.js
@@ -9,21 +9,36 @@ Adapted as a jQuery plugin by Maurizio Manetti
 
 */
 
-(function( $ ) {
+;(function( $, window, document, undefined ) {
  
   "use strict";
 
-  $.fn.simpletree = function( options ) {
- 
-  var settings = $.extend({
-     classChanged: 'st-treed',
-     classOpen: 'st-open',
-     classCollapsed: 'st-collapsed',
-     classLeaf: 'st-file',
-     classLast: 'st-last',
-     startCollapsed: true
-  }, options); 			
+  var pluginName = 'simpletree',
+      defaults = {
+       classChanged: 'st-treed',
+       classOpen: 'st-open',
+       classCollapsed: 'st-collapsed',
+       classLeaf: 'st-file',
+       classLast: 'st-last',
+       startCollapsed: true
+     };
 
+  // util function to get the real bg color of an element
+  var get_bgcolor = function(obj) {
+    var real = obj.css('backgroundColor');
+    var none = 'rgba(0, 0, 0, 0)';
+    // if bg color not set look for the color of first parent with a bg color set
+    if (real === none) { 
+        real = obj.parents().filter(function() {
+            return $(this).css('backgroundColor') != none
+        }).first().css('backgroundColor');
+    }
+    // if bg color yet not set fallback to white
+    if (real === undefined) {
+      real = 'rgba(255, 255, 255, 255)';
+    }
+    return real;
+  }
 
   var handleClick = function(e) {
     if (!e) var e = window.event;
@@ -31,28 +46,58 @@ Adapted as a jQuery plugin by Maurizio Manetti
     if (e.stopPropagation) e.stopPropagation();
   }
 
-  this.addClass('st-treed');
-  this.find('li').each(function(index){
-    var $li = $(this);
-    if ($li.children('ul').length > 0) {
-      $li.addClass(settings.classCollapsed);
-      $li.on('mousedown',function(event) {
-          $li.toggleClass(settings.classOpen + ' ' + settings.classCollapsed);
-          handleClick(event);
-        });
-    } else {
-      $li.addClass(settings.classLeaf);
-    }
-    if ($li.next('li').length == 0) {
-      $li.addClass(settings.classLast);
-    }
-  });
+  function SimpleTree( element, options ) {
+    this.element = $(element);
+    this.settings = $.extend( {}, defaults, options);
+    this._defaults = defaults;
+    this._name = pluginName;
+    this.init();    
+  }
 
-  this.find('a').on('mousedown',handleClick);
-       
-  return this;
-  
+  SimpleTree.prototype.init = function () {
+    var settings = this.settings;
+    var $element = this.element;
+    // init the plugin on matched elements 
+    $element.addClass(settings.classChanged);
+    // take all listed items
+    $element.find('li').each(function(index){
+      var $li = $(this);
+      // if the list item has unordered lists as children
+      if ($li.children('ul').length > 0) { 
+        if (settings.startCollapsed) { 
+          $li.addClass(settings.classCollapsed); // add class collapsed if should start collapsed (it is the default setting) 
+        } else {
+          $li.addClass(settings.classOpen); // add class open if it should start open
+        }
+        // manage click on item
+        $li.on('mousedown',function(event) { 
+            $li.toggleClass(settings.classOpen + ' ' + settings.classCollapsed); // toggle open / collapsed status
+            handleClick(event); // avoid propagation of the event to parent container(s)
+          });
+      } else {
+        $li.addClass(settings.classLeaf); // has no children: it's a leaf
+      }
+      // has no list items subsequent siblings: it is the last one
+      if ($li.next('li').length == 0) {
+        $li.addClass(settings.classLast); 
+        // set the background color explicitly so to hide the UL vertical dots
+        $li.css('backgroundColor',get_bgcolor($li)); 
+      }
+    });
+    // avoid anchor tags click to fire collapse / open of parent containers
+    $element.find('a').on('mousedown',handleClick); 
   };
+
+  // prevent against multiple instantiations
+  // attach the plugin in the data-attribute of matched elements
+  $.fn[pluginName] = function ( options ) {
+    return this.each(function () {
+      if (!$.data(this, 'plugin_' + pluginName)) {
+        $.data(this, 'plugin_' + pluginName, 
+        new SimpleTree( this, options ));
+      }
+  });
+  }  
  
-}( jQuery ));
+}( jQuery, window, document ));
 
diff --git a/examples/index.html b/examples/index.html
index f3ac93db078dd197af203f08213031552d32052f..a64e0dd17bfe256c24292da06408d1260fbae67d 100644
--- a/examples/index.html
+++ b/examples/index.html
@@ -2,19 +2,23 @@
 <html>
 <head>
 	<meta charset="utf-8">
-	<title>Simple tree example</title>
-	
+	<title>jquery-simpletree usage example</title>
+	<link rel="stylesheet" href="../dist/css/simpletree.css">
+	<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Lato">
+
 	<style>
+		body {
+			background-color: #f1f1f1;
+			font-family: 'Lato', sans-serif;
+			font-size: 13px;
+		}
 		div.spacer {
 			margin-bottom: 20px;
 		}
 	</style>
 
-
 	<script src="//code.jquery.com/jquery-2.2.4.min.js"></script>
-
-	<link rel="stylesheet" href="../dist/css/simpletree.css">
-	<script src="../dist/js/simpletree.jquery.js"></script>
+	<script src="../dist/js/simpletree.jquery.js?v=150623"></script>
 
 	<script>
 
@@ -24,6 +28,10 @@
 			$('#firstTree').simpletree();
 		});	
 
+	$('#maketree_two').on('click',function(){
+			$('#secondTree').simpletree({startCollapsed: false});
+		});	
+
 	});
 
 	</script>
@@ -32,73 +40,154 @@
 
 <body>
 
-<div class="spacer">
-	<button id="maketree_one">Make a Tree</button>
-</div>
-
-	<ul id="firstTree" class="tree">
-		<li>Element 1</li>
-		<li><a href="#">Element 2</a>
-				<ul>
-					<li><a href="#">Sub-element 2.1</a></li>
-					<li>Sub-element 2.2</li>
-					<li>Sub-element 2.3
-						<ul>
-							<li><a href="#">Sub-sub-element 2.3.1</a></li>
-							<li>Sub-sub-element 2.3.2</li>
-							<li>Sub-sub-element 2.3.3</li>
-							<li><a href="#">Sub-sub-element 2.3.4</a>
-									<ul>
-										<li>Sub-sub-sub-element 2.3.4.1</li>
-										<li>Sub-sub-sub-element 2.3.4.2</li>
-										<li>Sub-sub-sub-element 2.3.4.3</li>
-									</ul>
-							</li>
-							<li>Sub-sub-element 2.3.5</li>
-						</ul>
-					</li>
-					<li>Sub-element 2.4</li>
-				</ul>
-		</li>
-		<li>Element 3</li>
-		<li>Element 4
-				<ul>
-					<li>Sub-element 4.1</li>
-					<li><a href="#">Sub-element 4.2</a>
-						<ul>
-							<li><a href="#">Sub-sub-element 4.2.1</a></li>
-							<li><a href="#">Sub-sub-element 4.2.2</a></li>
-						</ul>	
-					</li>
-					<li><a href="#">Sub-element 4.3</a>
-						<ul>
-							<li><a href="#">Sub-sub-element 4.3.1</a></li>
-							<li><a href="#">Sub-sub-element 4.3.2</a>
-									<ul>
-										<li><a href="#">Sub-sub-sub-element 4.3.2.1</a></li>
-										<li>Sub-sub-sub-element 4.3.2.2</li>
-										<li>Sub-sub-sub-element 4.3.2.3</li>
-									</ul>
-							</li>
-							<li><a href="#">Sub-sub-element 4.3.3</a></li>
-							<li><a href="#">Sub-sub-element 4.3.4</a></li>
-							<li><a href="#">Sub-sub-element 4.3.5</a>
-									<ul>
-										<li>Sub-sub-sub-element 4.3.5.1</li>
-										<li><a href="#">Sub-sub-sub-element 4.3.5.2</a></li>
-										<li>Sub-sub-sub-element 4.3.5.3</li>
-									</ul>
-							</li>
-							<li><a href="#">Sub-sub-element 4.3.6</a></li>
-						</ul>
-					</li>
-				</ul>
+	<h1>Examples:</h1>
+
+	<div class="spacer">
+		<button id="maketree_one">Make a Tree with first list (start collapsed)</button>
+		<ul id="firstTree" class="tree">
+			<li><b>FIRST TREE</b></li>
+			<li><a href="#">Element 2</a>
+					<ul>
+						<li><a href="#">Sub-element 2.1</a></li>
+						<li>Sub-element 2.2</li>
+						<li>Sub-element 2.3
+							<ul style="background-color: #ccffcc;">
+								<li><a href="#">Sub-sub-element 2.3.1</a> - Light green bg is to test last child correct bg image</li>
+								<li>Sub-sub-element 2.3.2</li>
+								<li>Sub-sub-element 2.3.3</li>
+								<li><a href="#">Sub-sub-element 2.3.4</a>
+										<ul>
+											<li>Sub-sub-sub-element 2.3.4.1</li>
+											<li>Sub-sub-sub-element 2.3.4.2</li>
+											<li>Sub-sub-sub-element 2.3.4.3</li>
+										</ul>
+								</li>
+								<li>Sub-sub-element 2.3.5</li>
+							</ul>
+						</li>
+						<li>Sub-element 2.4</li>
+					</ul>
 			</li>
-		<li>Element 5</li>
-		<li>Element 6</li>
+			<li>Element 3</li>
+			<li>Element 4
+					<ul>
+						<li>Sub-element 4.1</li>
+						<li><a href="#">Sub-element 4.2</a>
+							<ul>
+								<li><a href="#">Sub-sub-element 4.2.1</a></li>
+								<li><a href="#">Sub-sub-element 4.2.2</a></li>
+							</ul>	
+						</li>
+						<li><a href="#">Sub-element 4.3</a>
+							<ul>
+								<li><a href="#">Sub-sub-element 4.3.1</a></li>
+								<li><a href="#">Sub-sub-element 4.3.2</a>
+										<ul>
+											<li><a href="#">Sub-sub-sub-element 4.3.2.1</a></li>
+											<li>Sub-sub-sub-element 4.3.2.2</li>
+											<li>Sub-sub-sub-element 4.3.2.3</li>
+										</ul>
+								</li>
+								<li><a href="#">Sub-sub-element 4.3.3</a></li>
+								<li><a href="#">Sub-sub-element 4.3.4</a></li>
+								<li><a href="#">Sub-sub-element 4.3.5</a>
+										<ul>
+											<li>Sub-sub-sub-element 4.3.5.1</li>
+											<li><a href="#">Sub-sub-sub-element 4.3.5.2</a></li>
+											<li>Sub-sub-sub-element 4.3.5.3</li>
+										</ul>
+								</li>
+								<li><a href="#">Sub-sub-element 4.3.6</a></li>
+							</ul>
+						</li>
+					</ul>
+				</li>
+			<li>Element 5</li>
+			<li>Element 6</li>
+		</ul>	
+	</div>
+
+	<hr>
+
+	<div class="spacer">
+		<button id="maketree_two">Make a Tree with second list (start uncollapsed)</button>
+		<ul id="secondTree" class="tree">
+			<li><b>SECOND TREE</b></li>
+			<li><a href="#">Element 2</a>
+					<ul>
+						<li><a href="#">Sub-element 2.1</a></li>
+						<li>Sub-element 2.2</li>
+						<li>Sub-element 2.3
+							<ul>
+								<li><a href="#">Sub-sub-element 2.3.1</a></li>
+								<li>Sub-sub-element 2.3.2</li>
+								<li>Sub-sub-element 2.3.3</li>
+								<li><a href="#">Sub-sub-element 2.3.4</a>
+										<ul>
+											<li>Sub-sub-sub-element 2.3.4.1</li>
+											<li>Sub-sub-sub-element 2.3.4.2</li>
+											<li>Sub-sub-sub-element 2.3.4.3</li>
+										</ul>
+								</li>
+								<li>Sub-sub-element 2.3.5</li>
+							</ul>
+						</li>
+						<li>Sub-element 2.4</li>
+					</ul>
+			</li>
+			<li>Element 3</li>
+			<li>Element 4
+					<ul>
+						<li>Sub-element 4.1</li>
+						<li><a href="#">Sub-element 4.2</a>
+							<ul>
+								<li><a href="#">Sub-sub-element 4.2.1</a></li>
+								<li><a href="#">Sub-sub-element 4.2.2</a></li>
+							</ul>	
+						</li>
+						<li><a href="#">Sub-element 4.3</a>
+							<ul>
+								<li><a href="#">Sub-sub-element 4.3.1</a></li>
+								<li><a href="#">Sub-sub-element 4.3.2</a>
+										<ul>
+											<li><a href="#">Sub-sub-sub-element 4.3.2.1</a></li>
+											<li>Sub-sub-sub-element 4.3.2.2</li>
+											<li>Sub-sub-sub-element 4.3.2.3</li>
+										</ul>
+								</li>
+								<li><a href="#">Sub-sub-element 4.3.3</a></li>
+								<li><a href="#">Sub-sub-element 4.3.4</a></li>
+								<li><a href="#">Sub-sub-element 4.3.5</a>
+										<ul>
+											<li>Sub-sub-sub-element 4.3.5.1</li>
+											<li><a href="#">Sub-sub-sub-element 4.3.5.2</a></li>
+											<li>Sub-sub-sub-element 4.3.5.3</li>
+										</ul>
+								</li>
+								<li><a href="#">Sub-sub-element 4.3.6</a></li>
+							</ul>
+						</li>
+					</ul>
+				</li>
+			<li>Element 6</li>
+		</ul>	
+	</div>
+
+	<hr>
+
+
+	<h2>In progress...</h2>
+
+	<ul>
+		<li><b>Make tree from class</b></li>
+		<li><b>Make tree on document ready</b></li>
+		<li><b>Collapse all</b></li>
+		<li><b>Expand all</b></li>
+		<li><b>Destroy tree</b></li>
+	</ul>
+
+
 
-</ul>	
-	
 </body>
 
 </html>
\ No newline at end of file
diff --git a/package.json b/package.json
index e7e655de9222c4e83d2961508da53873eddf10ce..7de1f2fc6fe0f379ecf25b98b0ed3e225205091f 100644
--- a/package.json
+++ b/package.json
@@ -14,13 +14,13 @@
   "version": "0.0.1",
   "author": {
     "name": "Maurizio Manetti",
-    "url": "http://mauriziomanetti.it"
+    "url": "https://mauntrelio.github.io"
   },
   "maintainers": [
     {
       "name": "Maurizio Manetti",
       "email": "maurizio@imanetti.net",
-      "url": "http://mauriziomanetti.it"
+      "url": "https://mauntrelio.github.io"
     }
   ],
   "licenses": [
@@ -33,7 +33,7 @@
   "homepage": "https://github.com/mauntrelio/jquery-simpletree",
   "docs": "https://github.com/mauntrelio/jquery-simpletree",
   "download": "https://github.com/mauntrelio/jquery-simpletree/zipball/master",
-  "demo": "https://mauntrelio.github.com/demos/jquery-simpletree/",
+  "demo": "https://mauntrelio.github.io/demos/jquery-simpletree/",
   "dependencies": {
       "jquery": ">=1.12"
   }