When a page loads, how can I change a specific HTML element's parameters using jQuery? For example, in the following HTML, I would like to change type="submit" to type="button" and src="image1.jpg" to src="image2.jpg"
<form class="edit" action="" method="post">
<input type="text" name="firstName">
<input type="submit" value="Submit" class="thisOne">
</form>
<img src="image1.jpg">