title: how to focus on the first tab, when having a few tabs
body: <pre><code> var tabs = Ext.widget('tabpanel', {
          renderTo: 'tabs',
          resizeTabs: true,
          enableTabScroll: true,
          width: 600,
          height: 250,
          defaults: {
              autoScroll: true,
              bodyPadding: 10
          },
          items: [{
              title: 'Tab 1003',
              iconCls: 'tabs',
              //ref:'http://www.yahoo.com',
              //hrefTarget:'_self',
              html: '&lt;div style="width:100%; height:100%; background-color:#cccccc;"&gt;&lt;iframe src="http://www.w3schools.com" frameborder=0  style="width:100%; height:100%;"&gt;&lt;/iframe&gt;&lt;/div&gt;',
              closable: true,
              focusOnToFront  : true
          }],.........................
  </code></pre>
  
  <p>how to focus on the first tab, when having a few tabs?
  i use focusOnToFront,but it's seen doesn't working.</p>