diff -r 90d92ad3fc59 -r 827705e14b3b public/javascripts/ssamr_registration.js
--- a/public/javascripts/ssamr_registration.js
+++ b/public/javascripts/ssamr_registration.js
@@ -3,13 +3,12 @@
 /* SSAMR specific functions */
 
 /* institution related functions */
-Event.observe(window, 'load',
-  function() {		
-		if(!$('ssamr_user_details_institution_type_true').checked && $('ssamr_user_details_institution_type_true').checked){
-		    $('ssamr_user_details_other_institution').disable();
-		    $('ssamr_user_details_institution_id').enable();
-		    $('ssamr_user_details_institution_type_true').checked = true;
-		    $('ssamr_user_details_institution_type_false').checked = false;
+$(document).ready(function(){
+		if(!$('#ssamr_user_details_institution_type_true').checked && $('#ssamr_user_details_institution_type_true').checked){
+            $('#ssamr_user_details_other_institution').attr('disabled', 'disabled');
+            $('#ssamr_user_details_institution_id').removeAttr('disabled');
+            $('#ssamr_user_details_institution_type_true').checked = true;
+            $('#ssamr_user_details_institution_type_false').checked = false;
 		}
 	}
 );