gistfile1.js

// open/close
open_node	: function (obj, callback, skip_animation) {
    console.log("Obj:", obj);
	obj = this._get_node(obj);
    			    console.log("calling open node", obj);
	if(!obj.length) { return false; }
	if(!obj.hasClass("jstree-closed")) { if(callback) { callback.call(); } return false; }
	var s = skip_animation || is_ie6 ? 0 : this._get_settings().core.animation,
		t = this;
	if(!this._is_loaded(obj)) {
		obj.children("a").addClass("jstree-loading");
		this.load_node(obj, function () { t.open_node(obj, callback, skip_animation); }, callback);
	}
	else {
		if(this._get_settings().core.open_parents) {
		    console.log("going to try opening some nodes");
			obj.parentsUntil(".jstree",".jstree-closed").each(function () {
				t.open_node(this, false, true);
			});
		}
		if(s) { obj.children("ul").css("display","none"); }
		obj.removeClass("jstree-closed").addClass("jstree-open").children("a").removeClass("jstree-loading");
		if(s) { obj.children("ul").stop(true, true).slideDown(s, function () { this.style.display = ""; t.after_open(obj); }); }
		else { t.after_open(obj); }
		this.__callback({ "obj" : obj });
		if(callback) { callback.call(); }
	}
},