diff --git a/build/js/ox.ui.js b/build/js/ox.ui.js
index 39dd91ee..0bfb4226 100644
--- a/build/js/ox.ui.js
+++ b/build/js/ox.ui.js
@@ -6576,10 +6576,13 @@ requires
         }
 
         function constructHead() {
+            var offset = 0;
             that.$titles = [];
-            self.columnPositions = [];
+            self.columnOffsets = [];
             $.each(self.visibleColumns, function(i, v) {
                 var $order, $resize, $left, $center, $right, timeout = 0;
+                offset += self.columnWidths[i];
+                self.columnOffsets[i] = offset - self.columnWidths[i] / 2;
                 that.$titles[i] = $('<div>')
                     .addClass('OxTitle OxColumn' + Ox.toTitleCase(v.id))
                     .css({
@@ -6601,7 +6604,6 @@ requires
                         }
                     })
                     .appendTo(that.$head.$content.$element);
-                self.columnPositions[i] = Ox.sum(self.columnWidths) - self.columnWidths[i] / 2;
                 $order = $('<div>')
                     .addClass('OxOrder')
                     .html(oxui.symbols['triangle_' + (
@@ -6641,6 +6643,7 @@ requires
                 width: (Ox.sum(self.columnWidths) + 2) + 'px'
             });
             Ox.print('s.sC', self.selectedColumn)
+            Ox.print('s.cO', self.columnOffsets)
             if (getColumnPositionById(self.options.columns[self.selectedColumn].id) > -1) { // fixme: save in var
                 toggleSelected(self.options.columns[self.selectedColumn].id);
                 that.$titles[getColumnPositionById(self.options.columns[self.selectedColumn].id)].css({
@@ -6672,8 +6675,8 @@ requires
                 startPos = getColumnPositionById(id),
                 pos = startPos,
                 stopPos = startPos,
-                positions = $.map(self.visibleColumns, function(v, i) {
-                    return self.columnPositions[i] - self.columnPositions[startPos]
+                offsets = $.map(self.visibleColumns, function(v, i) {
+                    return self.columnOffsets[i] - self.columnOffsets[startPos]
                 });
             $('.OxColumn' + Ox.toTitleCase(id)).css({
                 opacity: 0.1
@@ -6681,10 +6684,10 @@ requires
             that.$titles[startPos].addClass('OxDrag').css({ // fixme: why does the class not work?
                 cursor: 'move'
             });
-            Ox.print('positions', positions)
+            Ox.print('offsets', offsets)
             $window.mousemove(function(e) {
                 var d = e.clientX - startX;
-                $.each(positions, function(i, v) {
+                $.each(offsets, function(i, v) {
                     if (d < 0 && d < v) {
                         stopPos = i;
                         return false;
@@ -6710,9 +6713,10 @@ requires
                 $title = that.$titles.splice(startPos, 1)[0],
                 column = self.visibleColumns.splice(startPos, 1)[0],
                 width = self.columnWidths.splice(startPos, 1)[0];
-            that.$titles.splice(stopPos, 0, $title);
             self.visibleColumns.splice(stopPos, 0, column);
             self.columnWidths.splice(stopPos, 0, width);
+            that.$head.$content.empty();
+            constructHead();
             Ox.print('s.vC', self.visibleColumns)
             $('.OxColumn' + Ox.toTitleCase(id)).css({
                 opacity: 1
@@ -6750,20 +6754,23 @@ requires
         }
 
         function moveColumn(id, pos) {
+            // fixme: column head should be one element, not three
             Ox.print('moveColumn', id, pos)
             var startPos = getColumnPositionById(id),
                 stopPos = pos,
                 startClassName = '.OxColumn' + Ox.toTitleCase(id),
                 stopClassName = '.OxColumn' + Ox.toTitleCase(self.visibleColumns[stopPos].id),
+                insert = startPos < stopPos ? 'insertAfter' : 'insertBefore'
                 $column = $('.OxTitle' + startClassName),
                 $order = $column.next(),
                 $resize = $order.next();
-            $column.detach().insertBefore($('.OxTitle' + stopClassName));
+            Ox.print(startClassName, 'before', stopClassName)
+            $column.detach()[insert](insert == 'insertAfter' ? $('.OxTitle' + stopClassName).next().next() : $('.OxTitle' + stopClassName));
             $order.detach().insertAfter($column);
             $resize.detach().insertAfter($order);
             $.each(that.$body.find('.OxItem'), function(i, v) {
                 var $v = $(v);
-                $v.children(startClassName).detach().insertBefore($v.children(stopClassName));
+                $v.children(startClassName).detach()[insert]($v.children(stopClassName));
             });
         }