Index: lams_central/web/signup/singupTab.jsp
===================================================================
diff -u -r4ccfff230e7e02d47842469995c6f32e8724a1db -rdddf2642321519548de01417f9ab64b1bf468e67
--- lams_central/web/signup/singupTab.jsp	(.../singupTab.jsp)	(revision 4ccfff230e7e02d47842469995c6f32e8724a1db)
+++ lams_central/web/signup/singupTab.jsp	(.../singupTab.jsp)	(revision dddf2642321519548de01417f9ab64b1bf468e67)
@@ -4,7 +4,7 @@
 			
 			$('form input[name="username"]').blur(function () {
 			    var username = $(this).val();
-				var re = /^[^<>^!#&()/\\|'\"?,.:{}= ~`*@%$]*$/;
+				var re = /^[^<>^!#&()/\\|\"?,:{}= ~`*%$]*$/;
 				if (re.test(username)) {
 				    $('.msg').hide();
 				} else {
@@ -140,4 +140,4 @@
 			</table>
 		
 		</html:form>
-	</div>
\ No newline at end of file
+	</div>