how to fire event on file select
<p>I've a form as</p>

<pre><code>&lt;form  onSubmit="return disableForm(this);" action="upload.php" method="post" name="f" id="wizecho" enctype="multipart/form-data"&gt;
    &lt;input type="file" name="file" /&gt;
    &lt;button onClick="return disableForm(this),ajaxUpload(this.form,'wizecho_upload.php', '&amp;lt;br&amp;gt;Uploading image please wait.....&amp;lt;br&amp;gt;'); return false;"&gt;
        Upload Image
    &lt;/button&gt;
&lt;/form&gt;
</code></pre>

<p>It is to upload an image.</p>

<p>Here I need to click on the button to upload the image and I've to use <code>onClick</code> event. I want to remove the upload button and as soon as the file is selected at the input, I want to fire the event. How do I do that??</p>
