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-rw-r--r--js/jquery.multi-select.js2
1 files changed, 1 insertions, 1 deletions
diff --git a/js/jquery.multi-select.js b/js/jquery.multi-select.js
index 56695de..0ec72e1 100644
--- a/js/jquery.multi-select.js
+++ b/js/jquery.multi-select.js
@@ -184,7 +184,7 @@
var parentOptgroup = selectableLi.parent('.ms-optgroup');
if (parentOptgroup.length > 0){
- parentOptgroup.children('.ms-optgroup-label').addClass('collapse').show();
+ parentOptgroup.children('.ms-optgroup-label').addClass('ms-collapse').show();
parentOptgroup.children('.ms-elem-selectable:not(.ms-selected)').show();
}
selectedOption.removeAttr('selected');