密码过短过长提示

public/app/ucenter/sign.js

@@ -24,7 +24,14 @@ function submit(){
 		$("#error_password").text(gLocal.gui.password_invaild_symbol);
 		hasError = true;
 	}
-
+	if($("#password").val().length < 6){
+		$("#error_password").text('Password is too short');
+		hasError = true;
+	}
+    if($("#password").val().length > 31){
+		$("#error_password").text('Password is too long');
+		hasError = true;
+	}
 	if(isValidUserName($("#username").val())==false){
 		$("#error_username").text(gLocal.gui.username_invaild_symbol);
 		hasError = true;