title: Why doesn't jsTree open_all() work for me?
body: <p>Started playing around with jQuery and the jsTree plugin yesterday, and have it successfully loading the tree with an AJAX call to a servlet.  Now, I would like to have the tree open all the nodes after loading so I added a success function to the ajax attribute.  However, I cannot seem to get the open_all() method to work properly.  I'm very new to working with jQuery so I'm guessing it's something simple that I'm doing wrong.</p>
  
  <p>Firebug isn't showing any errors which rules out the dumb error of mistyped method name. I checked the documentation and I think I'm doing everything correctly according to what I read.  The tree is loading correctly, but not opening all the nodes after the page loads.</p>
  
  <p>I'm using jQuery 1.4.2 and jsTree 1.0rc2 on Firefox 3.6.8.</p>
  
  <p>Here's the code I'm using to load the tree and attempt to open all the nodes in the tree:</p>
  
  <pre><code>// Create the tree object
  $("td#modelXML").jstree({
      core : { "animation" : 0 },
      //xml_data : {"data" : "" + xml, "xsl" : "nest"},
      xml_data : {"ajax" : 
                      {"url" : "servlet/GetModelHierarchy", 
                      "type" : "post", "data" : { modelId : "" + modelId} }, 
                      "xsl" : "nest",
                      "success" : function(){
                                  $(this).open_all(-1);
                                  }
      },
      themes : {"theme" : "classic", "dots" : true, "icons" : true},
      types : { 
          "types" : {
              "category" : {
                  "valid_children" : ["factor"]
              },
              "factor" : {
                  "valid_children" : ["level"]
              },
              "level" : {
                  "valid_children" : "none",
                  "icon" : {
                      "image" : "${request.contextPath}/jsTree/file.png"
                  }
              }
          }
      },
      plugins : ["themes", "types", "xml_data"]
  });
  </code></pre>