function inner_clicked(v, option, e) {
            var category = v.value;
            var node_types = LiteGraph.getNodeTypesInCategory( category, canvas.filter || graph.filter );
            var values = [];
            for (var i in node_types) {
                if (!node_types[i].skip_list) {
                    values.push({
                        content: node_types[i].title,
                        value: node_types[i].type
                    });
                }
            }

            new LiteGraph.ContextMenu( values, { event: e, callback: inner_create, parentMenu: menu }, ref_window );
            return false;
        }
switches to live mode (node shapes are not rendered, only the content)
this feature was designed when graphs where meant to create user interfaces
@method switchLiveMode