Clicking on a parent object in gantt wrongly collapses objects at the same level (#32812).

Patch by Yuichi HARADA.


git-svn-id: http://svn.redmine.org/redmine/trunk@19433 e93f8b46-1217-0410-a6f0-8f06a7374b81

public/javascripts/gantt.js

@@ -231,8 +231,9 @@ function resizableSubjectColumn(){
 }
 
 ganttEntryClick = function(e){
-  var subject = $(e.target.parentElement);
-  var subject_left = parseInt(subject.css('left'));
+  var icon_expander = e.target;
+  var subject = $(icon_expander.parentElement);
+  var subject_left = parseInt(subject.css('left')) + parseInt(icon_expander.offsetWidth);
   var target_shown = null;
   var target_top = 0;
   var total_height = 0;