collapse.js in flashgrid-2.2.0

- old
+ new

@@ -77,12 +77,11 @@
 
     this.$element[dimension](this.$element[dimension]())[0].offsetHeight
 
     this.$element
       .addClass('collapsing')
-      .removeClass('collapse')
-      .removeClass('in')
+      .removeClass('collapse in')
 
     this.transitioning = 1
 
     var complete = function () {
       this.transitioning = 0
@@ -150,10 +149,10 @@
     var parent  = $this.attr('data-parent')
     var $parent = parent && $(parent)
 
     if (!data || !data.transitioning) {
       if ($parent) $parent.find('[data-toggle="collapse"][data-parent="' + parent + '"]').not($this).addClass('collapsed')
-      $this[$target.hasClass('in') ? 'addClass' : 'removeClass']('collapsed')
+      $this.toggleClass('collapsed', $target.hasClass('in'))
     }
 
     Plugin.call($target, option)
   })
 
\ No newline at end of file