title: How to change date format in dhtmlx Gantt?
body: <p>I have a Gantt template which I downloaded from <a href="http://dhtmlx.com/docs/products/dhtmlxGantt/download.shtml" rel="nofollow">Gantt Docs</a></p>
  
  <p>Well, I called my gantt but I want to set the time range to the years 2015-2023, instead of letting it default to days/months, but I don't know where I can change it. </p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
  &lt;head&gt;
  &lt;meta http-equiv="Content-type" content="text/html; charset=utf-8"&gt;
   &lt;title&gt;Tooltip&lt;/title&gt;
  &lt;/head&gt;
  &lt;script src="../../codebase/dhtmlxgantt.js" type="text/javascript" charset="utf-8"&gt;&lt;/script&gt;
  &lt;script src="../../codebase/ext/dhtmlxgantt_tooltip.js" type="text/javascript" charset="utf-8"&gt;&lt;/script&gt;
  &lt;link rel="stylesheet" href="../../codebase/dhtmlxgantt.css" type="text/css" media="screen" title="no title" charset="utf-8"&gt;
  
  &lt;script type="text/javascript" src="../common/testdata.js"&gt;&lt;/script&gt;
  &lt;style type="text/css"&gt;
      html, body{ height:100%; padding:0px; margin:0px; overflow: hidden;}
  &lt;/style&gt;
  &lt;body&gt;
  &lt;div id="gantt_here" style='width:100%; height:100%;'&gt;&lt;/div&gt;
  
  &lt;script type="text/javascript"&gt;
  
      var tasks =  {
          data:[
              {id:1, text:"Project #2", start_date:"01-04-2013", duration:18,order:10,
                  progress:0.4, open: true},
              {id:2, text:"Task #1",    start_date:"02-04-2013", duration:8, order:10,
                  progress:0.6, parent:1},
              {id:3, text:"Task #2",    start_date:"11-04-2013", duration:8, order:20,
                  progress:0.6, parent:1}
          ],
          links:[
              { id:1, source:1, target:2, type:"1"},
              { id:2, source:2, target:3, type:"0"},
              { id:3, source:3, target:4, type:"0"},
              { id:4, source:2, target:5, type:"2"},
          ]
      };
  
      gantt.init("gantt_here");
      gantt.parse(tasks);
  
      gantt.init("gantt_here");
      gantt.parse(demo_tasks);
  &lt;/script&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>