iframe in a tab panal

http://www.extjs.com/forum/showthread.php?18144-iframe-in-a-tab-panal&highlight=IFrameComponent

Jack has this solution

Code:

Ext.ux.IFrameComponent = Ext.extend(Ext.BoxComponent, {
     onRender : function(ct, position){
          this.el = ct.createChild({tag: 'iframe', id: 'iframe-'+ this.id, frameBorder: 0, src: this.url});
     }
});

then:

Code:

var tab = new Ext.Panel({
     id: id,
     title: title,
     closable:true,
     // layout to fit child component
     layout:'fit', 
     // add iframe as the child component
     items: [ new Ext.ux.IFrameComponent({ id: id, url: uri }) ]
});
            
this.add(tab);

I need to make this work for my tabs, but the way I have my layout, i am not sure how to put in the code.

Code:

 Ext.onReady(function(){

        Ext.state.Manager.setProvider(new Ext.state.CookieProvider());
        
       var viewport = new Ext.Viewport({
           
             layout:"border",
items:[

	 new Ext.BoxComponent({ // raw
          region:'north',
          el: 'north',
          height:106
           }),
	{
    region:"center",
    title:"User Portal",
    items:[{
        xtype:"tabpanel",
        activeTab:0,
        items:[{
            xtype:"panel",
            title:"Personal Assistant",
			contentEl: 'panel1'
          },{
            xtype:"panel",
            title:"Fowarding",
			contentEl: 'panel2'
          },{
            xtype:"panel",
            title:"OutLook",
			contentEl: 'panel3'
          },{
            xtype:"panel",
            title:"Corporate Directory",
			contentEl: 'panel4'
          },{
            xtype:"panel",
            title:"Administration",
			contentEl: 'panel5'
          },{
            xtype:"panel",
            title:"Downloads",
			contentEl: 'panel6'
          },{
            xtype:"panel",
            title:"Training",
			contentEl: 'panel7'
          }]
      }]
  },
  
  {
    region:"south",
   title:'Copyright 2005-2007 company, Inc.'
      }]
  
           
        });
    });

Any help would be great.