```javascript
var componentSettings = {
  components: [
    {
      id: 'iframe-component',
      src: 'http://en.wikipedia.org/wiki/Main_Page'
    },
    {
      id: 'extended-iframe-component',
      src: 'app.components.ExtendedIframeComponent',
      args: {
        iframeAttributes:{
          src: 'http://en.wikipedia.org/wiki/Main_Page'
        }
      }
    },
    {
      id: 'extended-iframe-component-that-sends-message',
      src: 'app.components.ExtendedIframeComponentThatSendsMessage'
    }
  ],

  targets: {
    first: [
      {
        id: 'iframe-instance',
        componentId: 'iframe-component',
        args: {
          iframeAttributes: {
            width: 600,
            height: 400
          }
        }
      }
    ],
    second: [
      {
        id: 'iframe-instance-2',
        componentId: 'extended-iframe-component',
        args: {
          iframeAttributes: {
            width: 600,
            height: 400
          }
        }
      }
    ],
    third: [
      {
        id: 'iframe-instance-3',
        componentId: 'extended-iframe-component-that-sends-message',
        args: {
          iframeAttributes: {
            width: 600,
            height: 400,
            style: 'border: 1px solid red',
            src: 'http://localhost:7070/examples/iframe-components/iframed-example-page-1.html?id1=iframe-instance-3&=id2=iframe-instance-4'
          }
        }
      },
      {
        id: 'iframe-instance-4',
        componentId: 'extended-iframe-component-that-sends-message',
        args: {
          iframeAttributes: {
            width: 600,
            height: 400,
            style: 'border: 1px solid blue',
            src: 'http://localhost:7070/examples/iframe-components/iframed-example-page-2.html'
          }
        }
      }
    ]
  }
}
```