Index: lams_central/web/login.jsp
===================================================================
diff -u -r4583983b64efe1d91fbb47cdde6a759a6a30e859 -r3c797b7dcb58649de6790843ea3bcd6fbc4b2eb1
--- lams_central/web/login.jsp	(.../login.jsp)	(revision 4583983b64efe1d91fbb47cdde6a759a6a30e859)
+++ lams_central/web/login.jsp	(.../login.jsp)	(revision 3c797b7dcb58649de6790843ea3bcd6fbc4b2eb1)
@@ -33,6 +33,7 @@
 			<script type="text/javascript" src="/lams/includes/javascript/bootstrap.min.js"></script>
 			<script type="text/javascript">
 				function submitForm() {
+					$('#loginButton').addClass('disabled');
 					$('#loginForm').submit();
 				}
 
Index: lams_central/web/loginTwoFactorAuth.jsp
===================================================================
diff -u -r4583983b64efe1d91fbb47cdde6a759a6a30e859 -r3c797b7dcb58649de6790843ea3bcd6fbc4b2eb1
--- lams_central/web/loginTwoFactorAuth.jsp	(.../loginTwoFactorAuth.jsp)	(revision 4583983b64efe1d91fbb47cdde6a759a6a30e859)
+++ lams_central/web/loginTwoFactorAuth.jsp	(.../loginTwoFactorAuth.jsp)	(revision 3c797b7dcb58649de6790843ea3bcd6fbc4b2eb1)
@@ -34,6 +34,7 @@
 		<script type="text/javascript" src="<lams:LAMSURL />includes/javascript/jquery.js"></script>
 		<script type="text/javascript">
 			function submitForm() {
+				$('#loginButton').addClass('disabled');
 				$('#loginForm').submit();
 			}