diff --git a/changelog.md b/changelog.md
index dc244e1..97ffd23 100644
--- a/changelog.md
+++ b/changelog.md
@@ -9,6 +9,10 @@
 
 ## Changes
 
++ Validate only last step in step(), which allows to jump to arbitrary step while validator enabled.
++ validate() code clean-up.
++ Optional second boolean argument of step() which allows to suppress validation at all.
++ Stop previous animation so multiple steps will not be visible when jumping to arbitrary step.
 + The container that holds the navigation buttons now has the class 'stepy-buttons';
 + The error container class was renamed to plural 'stepy-errors';
 + Forms without ID will receives a genarated hash to be used as hook;
diff --git a/lib/jquery.stepy.css b/lib/jquery.stepy.css
index 9b56f3f..65f057c 100755
--- a/lib/jquery.stepy.css
+++ b/lib/jquery.stepy.css
@@ -1,39 +1,37 @@
-@CHARSET "UTF-8";
-
-body { font-size: 10px }
-
-.stepy-header { list-style: none; padding: 0; width: 724px }
-  .stepy-header li { cursor: pointer; float: left; padding: 10px }
-    .stepy-header li.stepy-error { background: url('../demo/img/error.png') no-repeat right top }
-    .stepy-header li div { color: #CCC; font: bold 2.8em verdana; text-shadow: 1px 1px #F8F8F8 }
-    .stepy-header li.stepy-active div { color: #369; cursor: auto }
-    .stepy-header li span { color: #CCC; font: 1.4em verdana }
-    .stepy-header li.stepy-active span { color: #BBB }
-
-.stepy-step { border: 1px solid #BBB; clear: left; padding: 15px 20px; width: 600px; -khtml-border-radius: 3px; -moz-border-radius: 3px; -opera-border-radius: 3px; -webkit-border-radius: 3px; border-radius: 3px }
-  .stepy-step legend { color: #4080BF; font: bold 1.8em arial; letter-spacing: .7px; padding: 0 2px 3px }
-  .stepy-step label { color: #222; display: block; font: bold 1.5em arial; letter-spacing: .7px; margin: 10px 0 3px 1px }
-
-  .stepy-step input,
-  .stepy-step textarea,
-  .stepy-step select { border: 1px solid #999; border-radius: 5px; color: #333; font-size: 1.4em; height: 27px; margin-bottom: 12px; padding: 3px; width: 90% }
-
-  .stepy-step select { height: 34px; padding-top: 5px }
-
-  .stepy-step textarea { height: 100px }
-
-  .stepy-navigator { height: 33px; margin-top: 20px }
-    .button-back { float: left }
-
-    .button-next,
-    .stepy-navigator input[type="submit"] { float: right }
-
-    .button-back,
-    .button-next,
-    .stepy-navigator input[type="submit"] { border: 1px solid #CCC; color: #7F0055; cursor: pointer; font: 1.2em verdana; padding: 7px 15px 8px; text-decoration: none; -khtml-border-radius: 3px; -moz-border-radius: 3px; -opera-border-radius: 3px; -webkit-border-radius: 3px; border-radius: 3px }
-
-    .stepy-navigator input[type="submit"] { background-color: transparent; border-color: #CCC; margin-bottom: 0; padding: 7px 15px 24px; width: 90px }
-
-    .button-back:hover,
-    .button-next:hover,
-    .stepy-navigator input[type="submit"]:hover { border-color: #BBB; color: #B07 }
+@CHARSET "UTF-8";
+
+.stepy-header { list-style: none; padding: 0; width: 724px }
+  .stepy-header li { cursor: pointer; float: left; padding: 10px }
+    .stepy-header li.stepy-error { background: url('../demo/img/error.png') no-repeat right top }
+    .stepy-header li div { color: #CCC; font: bold 1.1em verdana; text-shadow: 1px 1px #F8F8F8 }
+    .stepy-header li.stepy-active div { color: #369; cursor: auto }
+    .stepy-header li span { color: #CCC; font: 1.1em verdana }
+    .stepy-header li.stepy-active span { color: #BBB }
+
+.stepy-step { border: 1px solid #BBB; clear: left; padding: 15px 20px; width: 600px; -khtml-border-radius: 3px; -moz-border-radius: 3px; -opera-border-radius: 3px; -webkit-border-radius: 3px; border-radius: 3px }
+  .stepy-step legend { color: #4080BF; font: bold 1.1em arial; letter-spacing: .7px; padding: 0 2px 3px }
+  .stepy-step label { color: #222; display: block; font: bold 1em arial; letter-spacing: .7px; margin: 10px 0 3px 1px }
+
+  .stepy-step input,
+  .stepy-step textarea,
+  .stepy-step select { border: 1px solid #999; border-radius: 5px; color: #333; font-size: 0.9em; height: 27px; margin-bottom: 12px; padding: 3px; width: 90% }
+
+  .stepy-step select { height: 34px; padding-top: 5px }
+
+  .stepy-step textarea { height: 100px }
+
+  .stepy-navigator { height: 33px; margin-top: 20px }
+    .button-back { float: left }
+
+    .button-next,
+    .stepy-navigator input[type="submit"] { float: right }
+
+    .button-back,
+    .button-next,
+    .stepy-navigator input[type="submit"] { border: 1px solid #CCC; color: #7F0055; cursor: pointer; font: 0.9em verdana; padding: 7px 15px 8px; text-decoration: none; -khtml-border-radius: 3px; -moz-border-radius: 3px; -opera-border-radius: 3px; -webkit-border-radius: 3px; border-radius: 3px }
+
+    .stepy-navigator input[type="submit"] { background-color: transparent; border-color: #CCC; margin-bottom: 0; padding: 7px 15px 24px; width: 90px }
+
+    .button-back:hover,
+    .button-next:hover,
+    .stepy-navigator input[type="submit"]:hover { border-color: #BBB; color: #B07 }
diff --git a/lib/jquery.stepy.js b/lib/jquery.stepy.js
index 8487a7d..96d309f 100755
--- a/lib/jquery.stepy.js
+++ b/lib/jquery.stepy.js
@@ -176,7 +176,8 @@
         e.preventDefault();
 
         if (!self.opt.back || methods._execute.call(self, self.opt.back, index - 1)) {
-          methods.step.call(self, (index - 1) + 1);
+          // Suppress validation of current step when going back.
+          methods.step.call(self, (index - 1) + 1, false);
         }
       }).appendTo(nav);
     }, _createButtons: function(step, index) {
@@ -270,7 +271,13 @@
           steps.find('p.stepy-navigator').remove();
         }
       });
-    }, step: function(index) {
+    },
+    /**
+     * When jumping to arbitrary step, use validateStep = true;
+     * otherwise jumping will be interrupted by validation failure.
+     */
+    step: function(index,validateStep) {
+      validateStep = validateStep === undefined || validateStep != false;
       var self = this
           that = $(this),
           opt  = that[0].opt;
@@ -286,7 +293,19 @@
       var max = index;
 
       // Remove Validator...
-      if (opt.validate) {
+      if (opt.validate && validateStep) {
+        // validate only last step
+        // there is no need to validate all steps, otherwise jumping to arbitrary steps will not work.
+        var stepIdxExpr = /-head-(\d+)$/ig;
+        var matches = stepIdxExpr.exec(that[0].heads.filter('.stepy-active').attr('id'));
+        if (matches.length == 2) {
+          var lastIdx = parseInt(matches.pop());
+          console.log('validating lastIdx:'+lastIdx);
+          if ( lastIdx !== index && !methods.validate.call(this,lastIdx) ) {
+            return;
+	  }
+        }
+        /*
         var isValid = true;
 
         for (var i = 0; i < index; i++) {
@@ -297,12 +316,14 @@
             break;
           }
         }
+	*/
       }
 
       // WIP...
         var stepsCount = steps.length;
 
         if (opt.transition == 'fade') {
+          steps.stop();
           steps.fadeOut(opt.duration, function() {
             if (--stepsCount > 0) {
               return;
@@ -311,6 +332,7 @@
             steps.eq(max).fadeIn(opt.duration);
           });
         } else if (opt.transition == 'slide') {
+          steps.stop();
           steps.slideUp(opt.duration, function() {
             if (--stepsCount > 0) {
               return;
@@ -348,14 +370,13 @@
         return true;
       }
 
-      var self = this,
+      var self = (this.get === undefined) ? this : this.get(0),
         step    = that.children('fieldset').eq(index),
         isValid    = true,
-        $title    = $('#' + that.attr('id') + '-header').children().eq(index),
-        $validate  = that.validate();
+        $title    = $('#' + that.attr('id') + '-header').children().eq(index);
 
       $(step.find(':input:enabled').get().reverse()).each(function() {
-        var fieldIsValid = $validate.element($(this));
+        var fieldIsValid = $(this).valid();
 
         if (fieldIsValid === undefined) {
           fieldIsValid = true;
@@ -372,7 +393,7 @@
             $title.addClass('stepy-error');
           }
 
-          $validate.focusInvalid();
+          $(this).focus();
         }
       });