[jQuery] changing a class depending on content

[Bruce MacKay]

Hi folks,

I've tried, but I just cannot get my head in the right direction with this one.
In a non-ajax application I have, if a database record is 
successfully updated, the return stream from the server contains an 
appropriate message of the form:

<p class="alert">The record was successfully updated</p>

If an error occurs, the message is of the form:

<p class="alert">Error - the record was not updated</p>

I currently "jquery" the stream via:

$(".alert").highlightFade({color:'red',speed:2000,iterator:'sinusoidal'});

I'd like now to be more user friendly and alter the fade colour to 
red only if the message contains the word "Error", with the colour to 
be green for all other messages.

The code below is my attempt, but it fails because I cannot work out 
how to "transfer" the message to myString (for subsequent testing of 
the presence of "Error" - how should I be doing this?

    $(".alert").filter(function(chekit){var myString=???????;
        //console.log(myString.indexOf("Error"))
        if (myString.indexOf("Error")>0)
        {
        
$(".alert").highlightFade({color:'red',speed:2000,iterator:'sinusoidal'});
        }
        else
        {
        
$(".alert").highlightFade({color:'green',speed:2000,iterator:'sinusoidal'});
        };
    });

What should be in ????  - I've tried $(this).html and similar 
permutations, but none (of these guesses) worked.

Thanks,

Bruce