<style>

  .thumb {

    height: 75px;

    border: 1px solid #000;

    margin: 10px 5px 0 0;

  }

}

</style>

<input type="file" id="files"  /><br/>

​

<output id="list"></output>

​

<script>

  function readFilesAndDisplayPreview(files) {

    // Loop through the FileList and render image files as thumbnails.

    for (var i = 0, f; f = files[i]; i++) {

​

      // Only process image files.

      if (!f.type.match('image.*')) {

        continue;

      }

​

      // http://www.w3.org/TR/FileAPI/#FileReader-interface

      var reader = new FileReader();

​

      // Closure to capture the file information.

      reader.onload = (function(theFile) {

        return function(e) {

          // Render thumbnail.

          var span = document.createElement('span');

          span.innerHTML = ['<img class="thumb" src="', e.target.result,

                            '" title="', escape(theFile.name), '"/>'].join('');

          document.getElementById('list').insertBefore(span, null);

        };

      })(f);

​

      // Read in the image file as a data URL.

      reader.readAsDataURL(f);

    }

  }

​

  function handleFileSelect(evt) {

    var files = evt.target.files; // FileList object

    readFilesAndDisplayPreview(files);

  }

  document.getElementById('files').addEventListener('change', handleFileSelect, false);

</script>