diff --git a/build/css/ox.ui.css b/build/css/ox.ui.css
index 1912e56c..a2662d22 100644
--- a/build/css/ox.ui.css
+++ b/build/css/ox.ui.css
@@ -1240,6 +1240,63 @@ Panels
     position: absolute;
 }
 
+.OxSplitPanel2 {
+    display: box;
+    display: -moz-box;
+    display: -webkit-box;
+    overflow: hidden;
+    box-flex: 0;
+    -mox-box-flex: 0;
+    -webkit-box-flex: 0;
+}
+.OxSplitPanel2.OxHorizontal {
+    box-orient: horizontal;
+    -moz-box-orient: horizontal;
+    -webkit-box-orient: horizontal;
+}
+.OxSplitPanel2.OxVertical {
+    box-orient: vertical;
+    -moz-box-orient: vertical;
+    -webkit-box-orient: vertical;
+}
+.OxSplitPanel2 > * {
+    box-flex: 0;
+    -mox-box-flex: 0;
+    -webkit-box-flex: 0;    
+}
+.OxSplitPanel2 > .OxSeparator {
+    display: -webkit-box;
+    position: relative;
+    z-index: 2;
+}
+.OxSplitPanel2 > .OxSeparator > * {
+    -webkit-box-flex: 0;    
+}
+.OxSplitPanel2 > .OxSeparator > .OxLine {
+    background-color: black;
+}
+.OxSplitPanel2.OxHorizontal > .OxSeparator {
+    width: 5px;
+    margin: 0 -2px 0 -2px;
+    cursor: ew-resize;
+}
+.OxSplitPanel2.OxHorizontal > .OxSeparator > .OxLine {
+    width: 1px;
+}
+.OxSplitPanel2.OxHorizontal > .OxSeparator > .OxSpace {
+    width: 2px;
+}
+.OxSplitPanel2.OxVertical > .OxSeparator {
+    height: 5px;
+    margin: -2px 0 -2px 0;
+    cursor: ns-resize;
+}
+.OxSplitPanel2.OxVertical > .OxSeparator > .OxLine {
+    height: 1px;
+}
+.OxSplitPanel2.OxVertical > .OxSeparator > .OxSpace {
+    height: 2px;
+}
 /*
 ================================================================================
 Requests
diff --git a/build/js/ox.js b/build/js/ox.js
index 0fcc9218..539cb8e0 100644
--- a/build/js/ox.js
+++ b/build/js/ox.js
@@ -1,8 +1,29 @@
 // todo: check http://ejohn.org/blog/ecmascript-5-strict-mode-json-and-more/
 
-var Ox = {
-    version: '0.1.2'
-};
+/*
+(function() {
+    var methods = {
+            'array': ['pop', 'push', 'shift', 'unshift'],
+            'string': [
+                'charAt', 'charCodeAt', 'concat', 'indexOf', 'lastIndexOf',
+                'match', 'replace', 'search', 'slice', 'split',
+                'substr', 'substring', 'toLocaleLowerCase', 'toLocaleUpperCase', 'toLowerCase',
+                'toString', 'toUpperCase', 'trim', 'trimLeft, 'trimRight',
+                'valueOf'
+            ]
+        },
+        global = this;
+    return function Ox(val) {
+        var ret,
+            type = Ox.typeof(val);
+        if (type == 'array') {
+            
+        }
+    }
+})();
+*/
+
+Ox = {};
 
 /*
 ================================================================================
@@ -74,6 +95,7 @@ Ox.TYPES = [
     'Arguments', 'Array', 'Boolean', 'Date', 'Element', 'Function', 'Infinity',
     'NaN', 'Null', 'Number', 'Object', 'RegExp', 'String', 'Undefined'
 ];
+Ox.VERSION = '0.1.2';
 Ox.WEEKDAYS = [
     'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday'
 ];
@@ -99,7 +121,7 @@ Ox.getset = function(obj, args, callback, context) {
     Ox.getset(obj, [key, val], callback, context)
     Ox.getset(obj, [{key: val, ...}], callback, context)    sets obj.key to val,
                                                             calls callback(key, val)
-                                                            for any changed value,
+                                                            for each changed value,
                                                             returns context
                                                             (for chaining)
 
@@ -2310,7 +2332,7 @@ Ox.endsWith = function(str, sub) {
     >>> Ox.endsWith("foobar", "bar")
     true
     */
-    return str.substr(-sub.length) === sub;
+    return str.toString().substr(-sub.length) === sub;
 };
 
 Ox.highlight = function(txt, str) {
@@ -2371,7 +2393,7 @@ Ox.reverse = function(str) {
     Ox.reverse("foo")
     oof
     */
-    return str.split('').reverse().join('');
+    return str.toString().split('').reverse().join('');
 };
 
 Ox.startsWith = function(str, sub) {
@@ -2379,7 +2401,7 @@ Ox.startsWith = function(str, sub) {
     >>> Ox.startsWith("foobar", "foo")
     true
     */
-    return str.substr(0, sub.length) === sub;
+    return str.toString().substr(0, sub.length) === sub;
 };
 
 Ox.stripTags = function(str) {
diff --git a/build/js/ox.ui.js b/build/js/ox.ui.js
index bb5c7fd7..5cadb0b5 100644
--- a/build/js/ox.ui.js
+++ b/build/js/ox.ui.js
@@ -772,20 +772,42 @@ requires
     };
 
     Ox.UI = (function() {
+        /*
+        $(function() {
+            Ox.extend(Ox.UI, {
+                $body: $('body'),
+                $document: $(document),
+                $window: $(window)
+            });
+        });
+        */
         return {
-            $body: $('body'),
-            $document: $(document),
-            $window: $(window),
-            path: function() {
-                return oxui.path;
+            getDimensions: function(orientation) {
+                return orientation == 'horizontal' ?
+                    ['width', 'height'] : ['height', 'width'];
             },
+            getEdges: function(orientation) {
+                return orientation == 'horizontal' ?
+                    ['left', 'right', 'top', 'bottom'] :
+                    ['top', 'bottom', 'left', 'right'];
+            },
+            DIMENSIONS: {
+                horizontal: ['width', 'height'],
+                vertical: ['height', 'width']
+            },
+            EDGES: {
+                horizontal: [['left', 'right'], ['top', 'bottom']],
+                vertical: [['top', 'bottom'], ['left', 'right']]
+            },
+            PATH: $('script[src*="ox.ui.js"]')
+                .attr('src').replace('js/ox.ui.js', ''),
             theme: function() {
                 
             },
             themePath: function() {
                 
             }
-        }
+        };
     }());
 
     /***
@@ -881,7 +903,7 @@ requires
                     element: self.options
                 };
             }
-            that.ox = Ox.version;
+            that.ox = Ox.VERSION;
             that.id = Ox.uid();
             that.$element = $('<' + (self.options.element || 'div') + '/>', {
                 data: {
@@ -11142,6 +11164,213 @@ requires
         return that;
     };
 
+    Ox.SplitPanel2 = function(options, self) {
+
+        var self = self || {},
+            that = new Ox.Element('div', self)
+                .defaults({
+                    elements: [],
+                    orientation: 'horizontal'
+                })
+                .options(options)
+                .addClass(
+                    'OxSplitPanel2 Ox' + Ox.toTitleCase(self.options.orientation)
+                );
+
+        Ox.extend(self, {
+            $separators: [],
+            clientXY: self.options.orientation == 'horizontal' ? 'clientX' : 'clientY',
+            dimensions: Ox.UI.DIMENSIONS[self.options.orientation],
+            edges: Ox.UI.EDGES[self.options.orientation]
+        });
+
+        self.options.elements.forEach(function(element, i) {
+            self.options.elements[i] = Ox.extend({
+                collapsible: false,
+                collapsed: false,
+                resizable: false,
+                resize: [],
+                size: 'auto'
+            }, element);
+        });
+
+        self.autoPercent = (100 - self.options.elements.reduce(function(val, element) {
+            return val + (Ox.endsWith(element.size, '%') ? parseFloat(element.size) : 0);
+        }, 0)) / self.options.elements.filter(function(element) {
+            return element.size == 'auto';
+        }).length + '%';
+
+        self.options.elements.forEach(function(element, i) {
+            var flex, index = i == 0 ? 0 : 1;
+            if (Ox.isNumber(element.size)) {
+                element.element.css(self.dimensions[0], element.size + 'px');
+            } else {
+                flex = (
+                    element.size == 'auto' ? self.autoPercent : element.size
+                ).replace('%', '');
+                element.element.css({
+                    boxFlex: flex,
+                    MozBoxFlex: flex,
+                    WebkitBoxFlex: flex
+                });
+            }
+            element.element.appendTo(that);
+            if (element.collapsible || element.resizable) {
+                self.$separators.push(
+                    Ox.Element()
+                        .addClass('OxSeparator')
+                        .bindEvent({
+                            anyclick: function() {
+                                that.toggle(i);
+                            },
+                            dragstart: function(event, e) {
+                                dragstart(i, e);
+                            },
+                            drag: function(event, e) {
+                                drag(i, e);
+                            },
+                            dragend: function(event, e) {
+                                dragend(i, e);
+                            },
+                        })
+                        .append($('<div>').addClass('OxSpace'))
+                        .append($('<div>').addClass('OxLine'))
+                        .append($('<div>').addClass('OxSpace'))
+                        ['insert' + (index ? 'Before' : 'After')](element.element)
+                );
+            }
+            
+        });
+
+        function dragstart(pos, e) {
+            var element = self.options.elements[pos],
+                size = element.element[self.dimensions[0]]();
+            if (element.resizable && !element.collapsed) {
+                Ox.isString(element.size) && setPixels(pos);
+				self.drag = {
+				    resize: Ox.isNumber(element.size) ?
+				        element.resize : element.resize.map(function(v) {
+				            return getPixelsByPercent(v);
+				        }),
+				    size: size,
+				    startPos: e[self.clientXY],
+	                startSize: size
+	            };
+	            Ox.print('self.drag', self.drag)
+			}
+        }
+
+        function drag(pos, e) {
+            var data = {},
+                element = self.options.elements[pos],
+                index = pos == 0 ? 0 : 1;
+            if (element.resizable && !element.collapsed) {
+                var d = e[self.clientXY] - self.drag.startPos,
+                    size = Ox.limit(
+                        self.drag.startSize + d * (index ? -1 : 1),
+                        self.drag.resize[0],
+                        self.drag.resize[element.resize.length - 1]
+                    );
+                self.drag.resize.forEach(function(v) {
+                    if (size >= v - 8 && size <= v + 8) {
+                        size = v;
+                        return false;
+                    }
+                });
+                if (size != self.drag.size) {
+                    self.drag.size = size;
+                    data[self.dimensions[0]] = size;
+                    element.element
+                        .css(self.dimensions[0], size + 'px')
+                        .triggerEvent('resize', data);
+                    triggerEvents('resize', pos);
+                }
+            }
+            
+        }
+
+        function dragend(pos, e) {
+            var data = {},
+                element = self.options.elements[pos];
+            if (element.resizable && !element.collapsed) {
+                Ox.isString(element.size) && setPercent(pos);
+                data[self.dimensions[0]] = self.drag.size
+                element.element.triggerEvent('resizeend', data);
+                triggerEvents('resizeend', pos);
+            }
+        }
+
+        function getPixelsByPercent(percent) {
+            return Math.round((
+                that[self.dimensions[0]]() - 
+                self.options.elements.reduce(function(val, element) {
+                    return val + Ox.isNumber(element.size) ?
+                        element.element[self.dimensions[0]]() : 0;
+                }, 0) - self.$separators.length
+            ) * parseFloat(percent) / 100);
+        }
+
+        function setPercent(pos) {
+            var element = self.options.elements[pos],
+                flex = element.size.replace('%', ''),
+                css = {
+                    boxFlex: flex,
+                    MozBoxFlex: flex,
+                    WebkitBoxFlex: flex
+                };
+            css[self.dimensions[0]] = '';
+            element.element.css(css);
+        }
+
+        function setPixels(pos) {
+            var css = {
+                    boxFlex: '',
+                    MozBoxFlex: '',
+                    WebkitBoxFlex: ''
+                },
+                element = self.options.elements[pos];
+            css[self.dimensions[0]] = element.element[self.dimensions[0]]() + 'px';
+            element.element.css(css);
+        }
+
+        function triggerEvents(event, pos) {
+            var data = {};
+            self.options.elements.forEach(function(element, i) {
+                if (i != pos && Ox.isString(element.size)) {
+                    data[self.dimensions[0]] = element.element[self.dimensions[0]]();
+                    element.element.triggerEvent(event, data);
+                }
+            });
+        }
+
+        that.toggle = function(pos) {
+            var css = {},
+                element = self.options.elements[pos],
+                flex,
+                index = pos == 0 ? 0 : 1,
+                size = element.element[self.dimensions[0]]();
+            if (element.collapsible) {
+                element.collapsed = !element.collapsed;
+                if (Ox.isString(element.size) && element.collapsed) {
+                    setPixels(pos);
+                }
+                css['margin' + Ox.toTitleCase(self.edges[0][index])] =
+                    element.collapsed ? -size : 0;
+                Ox.print('css', css);
+                that.animate(css, 250, function() {
+                    if (Ox.isString(element.size) && !element.collapsed) {
+                        setPercent(pos);
+                    }
+                    element.element.triggerEvent('toggle', {collapsed: element.collapsed});
+                    triggerEvents('resize', pos);
+                });
+            }
+        }
+
+        return that;
+        
+    };
+
     /**
         options:
             elements: [{            array of one, two or three elements