Close bootstrap dialog but don't reload parent page

Hi. I am opening a bootstrap dialog page using the following command

<button type="button" style="" href="../home/ajax/modal_prepemailstmt.php?client_id=126" data-target="#ajax3" data-toggle="modal" class="btn btn-primary btn-3d">EMAIL STMT</button>

When I close the dialog - I dont want the main / parent page to reload. I just want it to stay static.
Is this possible ?

Can you provide the full code for this page? My guess is the page is reloading because clicking on the button (which I assume is in a form?) is causing the causing the page to reload. I need to see the JavaScript for the page.