function _initTafel()
	{
		treeviewOBJ = new TafelTree('treeview', struct, 'images/');
		treeviewOBJ.setOnOpen(function (branch, status)
		{
			if (status)
			mainDirectory.getChild(branch.getId()).expand();
			else
			mainDirectory.getChild(branch.getId()).child = new Array();
		});
		treeviewOBJ.setOnClick(function (branch)
		{
			mainDirectory.getChild(branch.getId()).click();
		});
		treeviewOBJ.generate();
	}