title: jsTree - rendering optimization | very long rendering with 2000 nodes
body: <p>I'm using jsTree ( 1.0-rc3 ) with option to load data by AJAX and I have a problem with loading about ~2000 childs node by it. While server responds within several seconds, it takes jsTree about ~40 seconds only to render the results in the browser (chrome, FF). In addition to that, FF returns information about no response from 'jquery-1.7.2.min.js'.The same amount of data freezes IE. Is it overloaded with data ? Or is it some kind of bug ? Are there any changeable factors, that can help me with faster rendering ?</p>
  
  <pre><code>jQuery( "#dependency-tree" ).jstree(
          {
              'plugins':['themes', 'json_data', 'ui', 'core', 'types', 'sort'],
              "json_data":{
                  "progressive_render": true,
                  "data":initData,
                  cache:false,
                  "ajax":{
                      "url":function ( node )
                      {
                          return appContext + 'GetUnitsNode/'
                              + node.attr( 'id' );
                      },
                      dataType:"text",
                      "success":function ( data )
                      {
                          if ( data == "none" )
                          {
                              return false;
                          }
                          return jQuery.parseJSON( data );
                      }
                  }
              },
              "ui":{
                  'select_limit':1
              },
              "core":{
                  'animation':0,
                  'html_titles':true
              },
              "themes":{
                  "theme":"rules",
                  "dots":true,
                  "icons":true
              },
              "types":{
                  "types":{
                      "default":{
                          "icon":{
                              "image":appContext + "/img/orange.png"
                          }
                      }
                  }
              },
              "sort":function ( a, b )
              {
                 return this.get_text( a ).toUpperCase() &gt; this.get_text( b ).toUpperCase() ? 1 : -1;
              }
          } ).bind( "select_node.jstree", function ( event, data )
          {
              submitedNodeId = data.rslt.obj.attr( 'id' );
              submitedNodeTypeId = data.rslt.obj.attr( "typeId" );
              submitedNodeLast = data.inst.is_leaf( data.rslt.obj );
              g_node_text = jQuery( data.rslt.obj ).children().eq(1).html();
          } );
  </code></pre>