How do you make the submit button into an image?

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Adding a gif to the submit button

In this article we will describe how to put a GIF image in a submit button. This can be particularly useful when using the upload feature, thus suggesting to the user that the file is being uploaded.

The first step is to create a hidden "div" which contains the desired GIF file. Here is an example on how it would look like:
<div id="your_div_id" style="display: none">
<img src="/path/to/your.gif" alt="gif"/>
</div>

The second step is to create a normal button (instead of the usual "Submit" button) and typing the following code to the "Additional Attributes" area:

onclick="document.getElementById('your_div_id').style.display='';formname_id.submit();"

This is the end to this simple customization that brings a nice effect to your form.