jQuery("#messageDiv").notify("error","You are using .NET, please don't make such obvious mistakes in future.");
That's all that is needed to add an inline error message in the format designed within jQuery UI Theme Roller.
There are several notification types pre-added but it is totally configurable at runtime with default template values you can pass in.
I also added the ability to use multiple messages and create a list like if you needed validation messages for multiple form fields in a single message box for example.
I will add more detail and the actual code in the next few days.