check existing email addresses on keypress of email in signin page applicant portal

cmsWebApp/webroot/extensions/applicantportal/sign_in.jsp

@@ -37,6 +37,10 @@
             $('input[type="password"]').keyup(function() {
                 validate();
             });
+            
+            $('input[type="text"]').keyup(function() {
+                recalcFunction();
+            });
         });
         
         function validate() {