title: extjs load image in TreePanel
body: <p>i created a Ext.TreePanel and i would have in the node an image, in the text of the node i have the url to the image but i can't load it in the page, i see only the text, there is the possibility to view the image?</p>
  
  <p>this is my code</p>
  
  <pre><code>var root1 = new Tree.AsyncTreeNode({
      text: 'Legenda degli starti PAT',
      draggable:true, // disable root node dragging
      id:'source'
  });
  
  var tree1 = new Tree.TreePanel({
      renderTo : 'legend',
      animate:true, 
      loader: new Tree.TreeLoader({dataUrl:'legend.php'}),
      containerScroll: true,
      root: root1,
  });
  </code></pre>
  
  <p>and this is the response of the TreePanel request</p>
  
  <pre><code>[{"text":"comuni","id":"co","leaf":false,"cls":"folder","children":[{"text":"http:\/\/localhost\
  /cgi-bin\/mapserv?map=\/home\/gis\/mapserver\/cartocomune_wms.map&amp;SERVICE=wms&amp;FORMAT=png&amp;VERSION=1.1
  .1&amp;LAYER=comuni&amp;REQUEST=GetLegendGraphic","id":"comuni","leaf":true,"cls":"file"}]},{"text":"idrografia"
  ,"id":"id","leaf":false,"cls":"folder","children":[{"text":"http:\/\/localhost\/cgi-bin\/mapserv
  ?map=\/home\/gis\/mapserver\/cartocomune_wms.map&amp;SERVICE=wms&amp;FORMAT=png&amp;VERSION=1.1.1&amp;LAYER=idrografia
  &amp;REQUEST=GetLegendGraphic","id":"idrografia","leaf":true,"cls":"file"}]},{"text":"viabilita","id":"via"
  ,"leaf":false,"cls":"folder","children":[{"text":"http:\/\/localhost\/cgi-bin\/mapserv?map=\/home
  \/gis\/mapserver\/cartocomune_wms.map&amp;SERVICE=wms&amp;FORMAT=png&amp;VERSION=1.1.1&amp;LAYER=viabilita&amp;REQUEST=GetLegendGraphic"
  ,"id":"viabilita","leaf":true,"cls":"file"}]},{"text":"uso_suolo","id":"uso","leaf":false,"cls":"folder"
  ,"children":[{"text":"http:\/\/localhost\/cgi-bin\/mapserv?map=\/home\/gis\/mapserver\/cartocomune_wms
  .map&amp;SERVICE=wms&amp;FORMAT=png&amp;VERSION=1.1.1&amp;LAYER=uso_suolo&amp;REQUEST=GetLegendGraphic","id":"uso_suolo"
  ,"leaf":true,"cls":"file"}]},{"text":"catasto","id":"cat","leaf":false,"cls":"folder","children":[{"text"
  :"http:\/\/localhost\/cgi-bin\/mapserv?map=\/home\/gis\/mapserver\/cartocomune_wms.map&amp;SERVICE=wms
  &amp;FORMAT=png&amp;VERSION=1.1.1&amp;LAYER=catasto&amp;REQUEST=GetLegendGraphic","id":"catasto","leaf":true,"cls":"file"
  }]}]
  </code></pre>
  
  <p>thank's
  Luca</p>