There is text on top of the Add to Cart image buttons (and other submit buttons)?

Using a text-editor open the file /product_details/includes/addtocart_form.tpl.php

Old Line 38:

<input type="submit" class="<?php echo $button_cls ?>" value="<?php echo $button_lbl ?>
" style="padding-top:3px;" title="<?php echo $button_lbl ?>" />

to

New Line 38:
<input type="submit" class="<?php echo $button_cls ?>" value="" style="padding-top:3px;" title="<?php echo $button_lbl ?>" />

When I click on the Add to Cart button nothing happens?

The easiest solution is to turn off the Ajax cart function.

Admin > Site > Configuration > Use Ajax to add, update or delete products from the cart? No