create a new slideshow, add some slides, click "select" - nothing happens. opera error console has :

[28/02/14 01:29:24] JavaScript - http://192.168.5.109/zabbix/popup.php?srctbl=screens&srcfld1=screenid&dstfrm=slideForm&multiselect=1&writeonly=1
Event thread: click
Uncaught exception: ReferenceError: Undefined variable: initSortable
Error thrown at line 127, column 3 in addPopupValues(list) in zabbix/slideconf.php?form=update&slideshowid=1&sid=52c5555734511d12:
initSortable();
called from line 52, column 5 in addSelectedValues(form, object) in zabbix/popup.php?srctbl=screens&srcfld1=screenid&dstfrm=slideForm&multiselect=1&writeonly=1:
parent.addPopupValues(items);
called from line 1, column 12 in <anonymous function>(event) in zabbix/popup.php?srctbl=screens&srcfld1=screenid&dstfrm=slideForm&multiselect=1&writeonly=1:
addSelectedValues('screens', 'screenid');

regression, caused by :

------------------------------------------------------------------------
r42563 | ivo | 2014-02-12 14:50:53 +0200 (Wed, 12 Feb 2014) | 1 line

..F....... ZBX-7242 fixed jQuery sortable objects not to change with when dragging them