Clean way to prevent enter button submitting a form
The following code solved my issue:
http://www.itorian.com/2012/07/stop-from-submission-posting-on-enter.html
<script type="text/javascript"> //Stop Form Submission of Enter Key Press function stopRKey(evt) { var evt = (evt) ? evt : ((event) ? event : null); var node = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null); if ((evt.keyCode == 13) && (node.type == "text")) { return false; } } document.onkeypress = stopRKey;</script>
Put this in the master page or just in the pages that you want.