this.get_container_ul().find("li.jstree-open").each(function () { 
                    if(this.id) { _this.data.core.to_open.push("#" + this.id.toString().replace(/^#/,"").replace(/\\\//g,"/").replace(/\//g,"\\\/").replace(/\\\./g,".").replace(/\./g,"\\.").replace(/\:/g,"\\:")); }
                });