Required library edition:
Required library file: dhtmlxtree_xw.js

expand list of nodes in dynamic tree (wait of loading of node before expanding next)

• list - list of nodes which will be expanded
• flag - true/false - select last node in the list

       tree.openItemsDynamic("id_0,id_0_2,id_0_2_3,id_2,id_2_1",true);

The method calls onOpenDynamicEnd event